Vulnerability-Lookup

RHSA-2026:68692

Vulnerability from csaf_redhat - Published: 2026-09-17 18:36 - Updated: 2026-09-17 23:54

Summary

Red Hat Security Advisory: sudo security, bug fix, and enhancement update

Severity

Important

Notes

Topic: An update for sudo is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Details: The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root. Security Fix(es): * sudo: Sudo: Policy bypass allows unauthorized program execution via execveat (CVE-2026-82474) Bug Fix(es) and Enhancement(s): * Use canonicalized path if user path contains ".." (JIRA:RHEL-212546) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2026-82474

A flaw was found in Sudo. This vulnerability allows users who are permitted to run specific commands to bypass security policy checks when using the `execveat` system call in ptrace-based intercept mode. By directly calling `execveat` or `fexecve`, an attacker can execute programs that would otherwise be denied, thereby circumventing policy enforcement and logging mechanisms.

7.8 (High)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-1220 - Insufficient Granularity of Access Control

Affected products

Fixed 33 products

Product	Version	Remediation
Unresolved product id: AppStream-10.2.Z:sudo-debuginfo-0:1.9.17-10.p2.el10_2.6.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:sudo-debuginfo-0:1.9.17-10.p2.el10_2.6.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:sudo-debuginfo-0:1.9.17-10.p2.el10_2.6.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:sudo-debuginfo-0:1.9.17-10.p2.el10_2.6.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:sudo-debugsource-0:1.9.17-10.p2.el10_2.6.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:sudo-debugsource-0:1.9.17-10.p2.el10_2.6.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:sudo-debugsource-0:1.9.17-10.p2.el10_2.6.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:sudo-debugsource-0:1.9.17-10.p2.el10_2.6.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:sudo-python-plugin-0:1.9.17-10.p2.el10_2.6.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:sudo-python-plugin-0:1.9.17-10.p2.el10_2.6.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:sudo-python-plugin-0:1.9.17-10.p2.el10_2.6.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:sudo-python-plugin-0:1.9.17-10.p2.el10_2.6.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:sudo-python-plugin-debuginfo-0:1.9.17-10.p2.el10_2.6.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:sudo-python-plugin-debuginfo-0:1.9.17-10.p2.el10_2.6.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:sudo-python-plugin-debuginfo-0:1.9.17-10.p2.el10_2.6.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:sudo-python-plugin-debuginfo-0:1.9.17-10.p2.el10_2.6.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:sudo-0:1.9.17-10.p2.el10_2.6.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:sudo-0:1.9.17-10.p2.el10_2.6.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:sudo-0:1.9.17-10.p2.el10_2.6.s390x	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:sudo-0:1.9.17-10.p2.el10_2.6.src	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:sudo-0:1.9.17-10.p2.el10_2.6.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:sudo-debuginfo-0:1.9.17-10.p2.el10_2.6.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:sudo-debuginfo-0:1.9.17-10.p2.el10_2.6.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:sudo-debuginfo-0:1.9.17-10.p2.el10_2.6.s390x	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:sudo-debuginfo-0:1.9.17-10.p2.el10_2.6.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:sudo-debugsource-0:1.9.17-10.p2.el10_2.6.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:sudo-debugsource-0:1.9.17-10.p2.el10_2.6.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:sudo-debugsource-0:1.9.17-10.p2.el10_2.6.s390x	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:sudo-debugsource-0:1.9.17-10.p2.el10_2.6.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:sudo-python-plugin-debuginfo-0:1.9.17-10.p2.el10_2.6.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:sudo-python-plugin-debuginfo-0:1.9.17-10.p2.el10_2.6.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:sudo-python-plugin-debuginfo-0:1.9.17-10.p2.el10_2.6.s390x	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:sudo-python-plugin-debuginfo-0:1.9.17-10.p2.el10_2.6.x86_64	—	Vendor Fix fix Workaround

Threats

Impact Important

References

13 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:68692	self
https://access.redhat.com/security/updates/classi…	external
https://bugzilla.redhat.com/show_bug.cgi?id=2525889	external
https://issues.redhat.com/browse/RHEL-212546	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2026-82474	self
https://bugzilla.redhat.com/show_bug.cgi?id=2525889	external
https://www.cve.org/CVERecord?id=CVE-2026-82474	external
https://nvd.nist.gov/vuln/detail/CVE-2026-82474	external
https://github.com/sudo-project/sudo	external
https://github.com/sudo-project/sudo/blob/v1.9.17…	external
https://github.com/sudo-project/sudo/commit/71fbe…	external
https://www.vulncheck.com/advisories/sudo-through…	external

JSON

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          "text": "This vulnerability in Sudo allows a local attacker, already authorized to run specific commands, to bypass configured policy restrictions. By directly invoking `execveat` or `fexecve` when Sudo is operating in ptrace-based intercept mode, an attacker can execute programs otherwise denied by `sudo` policies. This undermines granular access control and could lead to unauthorized command execution on affected Red Hat systems.",
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      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-82474"
        },
        {
          "category": "external",
          "summary": "RHBZ#2525889",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2525889"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-82474",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-82474"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-82474",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-82474"
        },
        {
          "category": "external",
          "summary": "https://github.com/sudo-project/sudo",
          "url": "https://github.com/sudo-project/sudo"
        },
        {
          "category": "external",
          "summary": "https://github.com/sudo-project/sudo/blob/v1.9.17p2/src/exec_ptrace.c",
          "url": "https://github.com/sudo-project/sudo/blob/v1.9.17p2/src/exec_ptrace.c"
        },
        {
          "category": "external",
          "summary": "https://github.com/sudo-project/sudo/commit/71fbe42dcd5a1c8f799540583a2dfb2ae6221edf",
          "url": "https://github.com/sudo-project/sudo/commit/71fbe42dcd5a1c8f799540583a2dfb2ae6221edf"
        },
        {
          "category": "external",
          "summary": "https://www.vulncheck.com/advisories/sudo-through-1.9-17p2-intercept-policy-bypass-via-execveat",
          "url": "https://www.vulncheck.com/advisories/sudo-through-1.9-17p2-intercept-policy-bypass-via-execveat"
        }
      ],
      "release_date": "2026-08-29T16:35:33.836000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-09-17T18:36:53+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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          "restart_required": {
            "category": "none"
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          "url": "https://access.redhat.com/errata/RHSA-2026:68692"
        },
        {
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          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "sudo: Sudo: Policy bypass allows unauthorized program execution via execveat"
    }
  ]
}

CVE-2026-82474 (GCVE-0-2026-82474)

Vulnerability from cvelistv5 – Published: 2026-08-29 16:35 – Updated: 2026-09-02 17:57

Title

Sudo through 1.9.17p2 Intercept Policy Bypass via execveat

Summary

Sudo through 1.9.17p2 fails to apply intercept policy checks to the execveat system call in ptrace-based intercept mode. Users permitted to run specific commands can execute denied programs by calling execveat directly or through fexecve, bypassing policy enforcement and logging.

Severity

8.5 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-02 17:57 UTC

CWE

CWE-693 - Protection Mechanism Failure

Assigner

VulnCheck mitre root

References

4 references

URL	Tags
https://github.com/sudo-project/sudo/commit/71fbe…	patch
https://github.com/sudo-project/sudo/blob/v1.9.17…	technical-description
https://github.com/sudo-project/sudo	product
https://www.vulncheck.com/advisories/sudo-through…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
sudo-project	sudo	Affected: 0 , ≤ 1.9.17p2 (custom) cpe:2.3:a:sudo_project:sudo::::::::

Date Public

2026-03-20 00:00

Credits

XlabAI Team of Tencent Xuanwu Lab Guannan Wang Zhanpeng Liu Guancheng Li Nofil Qasim Quentin Chalabi

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2026-82474",
                "options": [
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                    "Exploitation": "none"
                  },
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-02T17:57:08.126153Z",
                "version": "2.0.3"
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        "providerMetadata": {
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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              "operator": "OR"
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          "lang": "en",
          "type": "finder",
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        {
          "lang": "en",
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      "descriptions": [
        {
          "lang": "en",
          "value": "Sudo through 1.9.17p2 fails to apply intercept policy checks to the execveat system call in ptrace-based intercept mode. Users permitted to run specific commands can execute denied programs by calling execveat directly or through fexecve, bypassing policy enforcement and logging."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 8.5,
            "baseSeverity": "HIGH",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          },
          "format": "CVSS"
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-693",
              "description": "Protection Mechanism Failure",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-29T16:35:33.836Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "Patch Commit",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/sudo-project/sudo/commit/71fbe42dcd5a1c8f799540583a2dfb2ae6221edf"
        },
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/sudo-project/sudo/blob/v1.9.17p2/src/exec_ptrace.c"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/sudo-project/sudo"
        },
        {
          "name": "VulnCheck Advisory: Sudo through 1.9.17p2 Intercept Policy Bypass via execveat",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/sudo-through-1.9-17p2-intercept-policy-bypass-via-execveat"
        }
      ],
      "title": "Sudo through 1.9.17p2 Intercept Policy Bypass via execveat",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-82474",
    "datePublished": "2026-08-29T16:35:33.836Z",
    "dateReserved": "2026-08-29T14:11:14.262Z",
    "dateUpdated": "2026-09-02T17:57:15.670Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.