CVE-2026-20315 (GCVE-0-2026-20315)

Vulnerability from cvelistv5 – Published: 2026-08-19 16:19 – Updated: 2026-08-20 18:30
VLAI
Title
Cisco Secure Workload Software Security Hardening Release August 2026 - Improper Access Control Vulnerabilities
Summary
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Workload engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20315 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) CWE-284.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 03:56 UTC
CWE
  • CWE-284 - Improper Access Control
Impacted products
Vendor Product Version CPE status
Cisco Cisco Secure Workload Affected: 2.2.1.41
Affected: 3.2.1.18
Affected: 3.3.2.50
Affected: 3.4.1.28
Affected: 3.4.1.34
Affected: 2.3.1.45
Affected: 2.3.1.41
Affected: 3.3.2.28
Affected: 3.1.1.59
Affected: 2.0.2.20
Affected: 2.1.1.33
Affected: 2.1.1.29
Affected: 3.2.1.28
Affected: 3.4.1.35
Affected: 3.1.1.65
Affected: 3.1.1.67
Affected: 2.0.1.34
Affected: 2.3.1.49
Affected: 2.2.1.39
Affected: 3.4.1.19
Affected: 3.3.2.23
Affected: 3.1.1.61
Affected: 3.1.1.54
Affected: 3.5.1.17
Affected: 3.3.2.33
Affected: 3.5.1.1
Affected: 2.3.1.53
Affected: 3.5.1.20
Affected: 3.5.1.30
Affected: 3.3.2.16
Affected: 3.1.1.55
Affected: 3.4.1.6
Affected: 2.3.1.50
Affected: 2.3.1.52
Affected: 3.2.1.19
Affected: 2.2.1.35
Affected: 3.1.1.53
Affected: 3.1.1.70
Affected: 3.2.1.20
Affected: 3.5.1.2
Affected: 1.103.1.12
Affected: 2.3.1.51
Affected: 3.3.2.42
Affected: 3.4.1.1
Affected: 3.3.2.12
Affected: 2.1.1.31
Affected: 3.5.1.23
Affected: 3.3.2.53
Affected: 3.4.1.14
Affected: 3.3.2.2
Affected: 3.4.1.20
Affected: 3.3.2.35
Affected: 2.2.1.34
Affected: 1.102.21
Affected: 3.3.2.5
Affected: 3.5.1.31
Affected: 3.6.1.5
Affected: 3.2.1.31
Affected: 3.5.1.37
Affected: 3.4.1.40
Affected: 3.6.1.17
Affected: 3.6.1.21
Affected: 3.2.1.32
Affected: 3.2.1.33
Affected: 3.6.1.35
Affected: 3.6.1.36
Affected: 3.7.1.5
Affected: 3.6.1.47
Affected: 3.7.1.22
Affected: 3.6.1.52
Affected: 3.7.1.39
Affected: 3.8.1.1
Affected: 3.7.1.51
Affected: 3.8.1.19
Affected: 3.8.1.36
Affected: 3.7.1.59
Affected: 3.8.1.39
Affected: 3.9.1.1
Affected: 3.9.1.10
Affected: 3.9.1.24
Affected: 3.9.1.25
Affected: 3.9.1.28
Affected: 3.9.1.38
Affected: 3.8.1.53
Affected: 3.9.1.52
Affected: 3.10.1.1
Affected: 3.9.1.64
Affected: 3.10.2.11
Affected: 3.9.1.66
Affected: 3.10.3.19
Affected: 3.9.1.69
Affected: 3.10.4.8
Affected: 3.10.5.6
Affected: 4.0.1.1
Affected: 4.0.2.4
Affected: 4.0.2.5
Affected: 3.10.6.3
Affected: 3.10.7.4
Affected: 4.0.3.13
Affected: 4.0.3.17
Affected: 3.10.8.3
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                        "Automatable": "yes"
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                    "timestamp": "2026-08-20T03:56:21.828713Z",
                    "version": "2.0.3"
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              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
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        "cna": {
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                  "status": "affected",
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                  "status": "affected",
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              "value": "As part of Cisco\u0027s ongoing commitment to proactive security and product quality, the Cisco Secure Workload engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities.\r\n\r\nThe vulnerabilities tracked by CVE-2026-20315 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) CWE-284."
            }
          ],
          "exploits": [
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              "lang": "en",
              "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
            }
          ],
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                "attackVector": "NETWORK",
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                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
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                "privilegesRequired": "NONE",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
                "version": "3.1"
              },
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            }
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          "problemTypes": [
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          ],
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            "dateUpdated": "2026-08-19T16:19:36.686Z",
            "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
            "shortName": "cisco"
          },
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              "name": "cisco-sa-hardening-csw1-shSvndWP",
              "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-csw1-shSvndWP"
            }
          ],
          "source": {
            "advisory": "cisco-sa-hardening-csw1-shSvndWP",
            "defects": [
              "CSCwu61354"
            ],
            "discovery": "INTERNAL"
          },
          "title": "Cisco Secure Workload Software Security Hardening Release August 2026 - Improper Access Control Vulnerabilities"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "assignerShortName": "cisco",
        "cveId": "CVE-2026-20315",
        "datePublished": "2026-08-19T16:19:36.686Z",
        "dateReserved": "2025-10-08T11:59:15.410Z",
        "dateUpdated": "2026-08-20T18:30:20.497Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.

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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.


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