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Common Weakness Enumeration

CWE-757

Allowed

Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')

Abstraction: Base · Status: Incomplete

API response cwe.mitre.org

A protocol or its implementation supports interaction between multiple actors and allows those actors to negotiate which algorithm should be used as a protection mechanism such as encryption or authentication, but it does not select the strongest algorithm that is available to both parties.

60 vulnerabilities reference this CWE, most recent first.

CVE-2018-25029 (GCVE-0-2018-25029)

Vulnerability from cvelistv5 – Published: 2022-02-04 22:33 – Updated: 2024-09-17 03:32
VLAI
Summary
The Z-Wave specification requires that S2 security can be downgraded to S0 or other less secure protocols, allowing an attacker within radio range during pairing to downgrade and then exploit a different vulnerability (CVE-2013-20003) to intercept and spoof traffic.
Severity
No CVSS data available.
CWE
  • CWE-757 - Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')
Assigner
References
Impacted products
Date Public
2018-05-23 00:00
Show details on NVD website
To clipboard 

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CVE-2017-9269 (GCVE-0-2017-9269)

Vulnerability from cvelistv5 – Published: 2018-03-01 19:00 – Updated: 2024-09-17 00:36
VLAI
Title
lack of keypinning in libzypp could lead to repository switching
Summary
In libzypp before August 2018 GPG keys attached to YUM repositories were not correctly pinned, allowing malicious repository mirrors to silently downgrade to unsigned repositories with potential malicious content.
Severity
7.7 (High)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
CWE
  • Malicious mirrors could downgrade repositories from trusted signed repositories to unsigned malicious repositories.
  • CWE-757
Assigner
References
Impacted products
Vendor Product Version
SUSE libzypp Affected: unspecified , < 201808 (custom)
Create a notification for this product.
Date Public
2017-08-03 00:00
Credits
Moritz Duge and Till Doerges from PRESENSE
Show details on NVD website
To clipboard 

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CVE-2017-9267 (GCVE-0-2017-9267)

Vulnerability from cvelistv5 – Published: 2018-03-02 20:00 – Updated: 2024-09-16 17:52
VLAI
Title
eDirectory LDAP peer certificate validation issue
Summary
In Novell eDirectory before 9.0.3.1 the LDAP interface was not strictly enforcing cipher restrictions allowing weaker ciphers to be used during SSL BIND operations.
Severity
6.5 (Medium)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE
Assigner
References
Impacted products
Vendor Product Version
Novell eDirectory Affected: unspecified , < 9.0.3.1 (custom)
Create a notification for this product.
Date Public
2017-10-02 00:00
Show details on NVD website
To clipboard 

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GHSA-35JR-C9GF-7V8M

Vulnerability from github – Published: 2026-09-11 09:31 – Updated: 2026-09-11 09:31
VLAI
Details

WeenyGenius, a computer lab management system by Howyar Technologies, has a Use of Insecure Protocol vulnerability. Due to the reliance on ZMTP Null mode, unauthenticated attackers on the same network can capture packets to leak transmitted data, or perform replay attacks with forged commands to disrupt classroom operations.

Severity
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.7 (High)
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Show details on source website
To clipboard 

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  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

GHSA-4V55-CPMV-3VCM

Vulnerability from github – Published: 2026-06-19 20:47 – Updated: 2026-06-19 20:47
VLAI
Summary
CoreWCF: WS-Security Reference DigestMethod Algorithm-Suite Bypass
Details

Impact

CoreWCF’s WS-Security 1.0 receive pipeline validates the SignatureMethod of an incoming ds:SignedInfo against the configured SecurityAlgorithmSuite, but does not validate the DigestMethod declared on each ds:Reference. As a result, a sender can populate ds:SignedInfo with SignatureMethod values the suite accepts (for example rsa-sha256 under Basic256Sha256) while declaring a per-reference DigestMethod the suite rejects (for example http://www.w3.org/2000/09/xmldsig#sha1). The signature is then verified where it permits SHA-1 digests, and the message is accepted.

Patches

Fixed in CoreWCF v1.8.1 and v1.9.1

Workarounds

None

Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "CoreWCF.Primitives"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.8.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "CoreWCF.Primitives"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.9.0"
            },
            {
              "fixed": "1.9.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-54780"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-327",
      "CWE-757"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-19T20:47:04Z",
    "nvd_published_at": null,
    "severity": "LOW"
  },
  "details": "### Impact\nCoreWCF\u2019s WS-Security 1.0 receive pipeline validates the `SignatureMethod` of an incoming `ds:SignedInfo` against the configured `SecurityAlgorithmSuite`, but does not validate the `DigestMethod` declared on each `ds:Reference`. As a result, a sender can populate `ds:SignedInfo` with `SignatureMethod` values the suite accepts (for example rsa-sha256 under Basic256Sha256) while declaring a per-reference `DigestMethod` the suite rejects (for example http://www.w3.org/2000/09/xmldsig#sha1). The signature is then verified where it permits SHA-1 digests, and the message is accepted.\n\n### Patches\nFixed in CoreWCF v1.8.1 and v1.9.1\n\n### Workarounds\nNone",
  "id": "GHSA-4v55-cpmv-3vcm",
  "modified": "2026-06-19T20:47:04Z",
  "published": "2026-06-19T20:47:04Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-4v55-cpmv-3vcm"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/CoreWCF/CoreWCF"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "CoreWCF: WS-Security Reference DigestMethod Algorithm-Suite Bypass"
}

GHSA-576M-XH9M-C774

Vulnerability from github – Published: 2026-06-26 00:32 – Updated: 2026-06-27 21:30
VLAI
Details

When HAVE_ENCRYPT_THEN_MAC is configured, the implementation could fall back to MAC-then-Encrypt rather than enforcing Encrypt-then-MAC.

Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
2.1 (Low)
CVSS:4.0/AV:A/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/U:Clear
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2026-6092"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-757"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-25T22:17:02Z",
    "severity": "LOW"
  },
  "details": "When HAVE_ENCRYPT_THEN_MAC is configured, the implementation could fall back to MAC-then-Encrypt rather than enforcing Encrypt-then-MAC.",
  "id": "GHSA-576m-xh9m-c774",
  "modified": "2026-06-27T21:30:28Z",
  "published": "2026-06-26T00:32:06Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6092"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wolfSSL/wolfssl/pull/10167"
    },
    {
      "type": "WEB",
      "url": "https://www.wolfssl.com/docs/security-vulnerabilities"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:A/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Clear",
      "type": "CVSS_V4"
    }
  ]
}

GHSA-5922-VXRC-H3GF

Vulnerability from github – Published: 2024-12-18 12:30 – Updated: 2025-10-03 09:30
VLAI
Details

Wapro ERP Desktop is vulnerable to MS SQL protocol downgrade request from a server side, what could lead to an unencrypted communication vulnerable to data interception and modification. This issue affects Wapro ERP Desktop versions before 9.00.0.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.2 (Critical)
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/R:U/V:C/RE:M/U:Amber
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{
  "affected": [],
  "aliases": [
    "CVE-2024-4995"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-311",
      "CWE-757",
      "CWE-922"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-12-18T12:15:09Z",
    "severity": "CRITICAL"
  },
  "details": "Wapro ERP Desktop is vulnerable to MS SQL protocol downgrade request from a server side, what could lead to an unencrypted communication vulnerable to data interception and modification.\u00a0This issue affects Wapro ERP Desktop versions before 9.00.0.",
  "id": "GHSA-5922-vxrc-h3gf",
  "modified": "2025-10-03T09:30:19Z",
  "published": "2024-12-18T12:30:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-4995"
    },
    {
      "type": "WEB",
      "url": "https://cert.pl/en/posts/2024/12/CVE-2024-4995"
    },
    {
      "type": "WEB",
      "url": "https://cert.pl/posts/2024/12/CVE-2024-4995"
    },
    {
      "type": "WEB",
      "url": "https://wapro.pl"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:U/V:C/RE:M/U:Amber",
      "type": "CVSS_V4"
    }
  ]
}

GHSA-5V9F-JCMR-JG2Q

Vulnerability from github – Published: 2026-08-27 21:31 – Updated: 2026-08-27 21:31
VLAI
Details

Unless the application explicitly raises smbMinVersion, the jCIFS client will negotiate down to SMB1/CIFS, which lacks mandatory signing/encryption and is vulnerable to NTLM relay and content-tampering MITM. Spring Integration 7.1.0 Spring Integration 7.0.0 - 7.0.5 Spring Integration 6.5.0 - 6.5.10 Spring Integration 6.4.0 - 6.4.12

Severity
6.6 (Medium)
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2026-59293"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-757"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-27T20:17:55Z",
    "severity": "MODERATE"
  },
  "details": "Unless the application explicitly raises smbMinVersion, the jCIFS client will negotiate down to SMB1/CIFS, which lacks mandatory signing/encryption and is vulnerable to NTLM relay and content-tampering MITM.\nSpring Integration 7.1.0\nSpring Integration 7.0.0 - 7.0.5\nSpring Integration 6.5.0 - 6.5.10\nSpring Integration 6.4.0 - 6.4.12",
  "id": "GHSA-5v9f-jcmr-jg2q",
  "modified": "2026-08-27T21:31:43Z",
  "published": "2026-08-27T21:31:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59293"
    },
    {
      "type": "WEB",
      "url": "https://spring.io/security/cve-2026-59293"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-69M8-336V-J57W

Vulnerability from github – Published: 2025-03-24 15:30 – Updated: 2025-03-24 15:30
VLAI
Details

SIMPLE.ERP client is vulnerable to MS SQL protocol downgrade request from a server side, what could lead to an unencrypted communication vulnerable to data interception and modification.

This issue affect SIMPLE.ERP from 6.20 to 6.30. Only the 6.30 version received a patch 6.30@a03.9, which make it possible for an administrator to enforce encrypted communication. Versions 6.20 and 6.25 remain unpatched.

Severity
8.3 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2024-8773"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-757"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-03-24T13:15:25Z",
    "severity": "HIGH"
  },
  "details": "SIMPLE.ERP client is vulnerable to MS SQL protocol downgrade request from a server side, what could lead to an unencrypted communication vulnerable to data interception and modification.\n\nThis issue affect SIMPLE.ERP from 6.20 to 6.30. Only the 6.30 version received a patch 6.30@a03.9, which make it possible for an administrator to enforce encrypted communication. Versions 6.20 and 6.25 remain unpatched.",
  "id": "GHSA-69m8-336v-j57w",
  "modified": "2025-03-24T15:30:45Z",
  "published": "2025-03-24T15:30:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-8773"
    },
    {
      "type": "WEB",
      "url": "https://cert.pl/en/posts/2025/03/CVE-2024-8773"
    },
    {
      "type": "WEB",
      "url": "https://cert.pl/posts/2025/03/CVE-2024-8773"
    },
    {
      "type": "WEB",
      "url": "https://simple.com.pl/produkty/simple-erp/dla-kogo"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

GHSA-6PQ6-PGX4-RHPR

Vulnerability from github – Published: 2024-08-02 18:31 – Updated: 2024-08-07 18:30
VLAI
Details

An issue in Horizon Business Services Inc. Caterease 16.0.1.1663 through 24.0.1.2405 and possibly later versions, allows a remote attacker to perform a Drop Encryption Level attack due to the selection of a less-secure algorithm during negotiation.

Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2024-38883"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-757"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-08-02T18:16:19Z",
    "severity": "CRITICAL"
  },
  "details": "An issue in Horizon Business Services Inc. Caterease 16.0.1.1663 through 24.0.1.2405 and possibly later versions, allows a remote attacker to perform a Drop Encryption Level attack due to the selection of a less-secure algorithm during negotiation.",
  "id": "GHSA-6pq6-pgx4-rhpr",
  "modified": "2024-08-07T18:30:41Z",
  "published": "2024-08-02T18:31:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-38883"
    },
    {
      "type": "WEB",
      "url": "https://packetstormsecurity.com/files/179892/Caterease-Software-SQL-Injection-Command-Injection-Bypass.html"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.273367"
    },
    {
      "type": "WEB",
      "url": "http://caterease.com"
    },
    {
      "type": "WEB",
      "url": "http://horizon.com"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

No mitigation information available for this CWE.

CAPEC-220: Client-Server Protocol Manipulation

An adversary takes advantage of weaknesses in the protocol by which a client and server are communicating to perform unexpected actions. Communication protocols are necessary to transfer messages between client and server applications. Moreover, different protocols may be used for different types of interactions.

CAPEC-606: Weakening of Cellular Encryption

An attacker, with control of a Cellular Rogue Base Station or through cooperation with a Malicious Mobile Network Operator can force the mobile device (e.g., the retransmission device) to use no encryption (A5/0 mode) or to use easily breakable encryption (A5/1 or A5/2 mode).

CAPEC-620: Drop Encryption Level

An attacker forces the encryption level to be lowered, thus enabling a successful attack against the encrypted data.

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