FKIE_CVE-2026-56968

Vulnerability from fkie_nvd - Published: 2026-06-23 17:17 - Updated: 2026-06-29 23:00
Severity
3.7 (Low) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Summary
GNU SASL before 2.2.4 lacks sanitization of a short challenge in _gsasl_ntlm_client_step in the NTLM client, which could result in memory disclosure via a crafted server.
References
cve@mitre.orghttps://ftp.gnu.org/gnu/gsasl/Product
cve@mitre.orghttps://lists.debian.org/debian-security-announce/2026/msg00259.htmlMailing List
cve@mitre.orghttps://lists.gnu.org/archive/html/help-gsasl/2026-06/msg00000.htmlExploit, Mailing List, Vendor Advisory
cve@mitre.orghttps://www.gnu.org/software/gsasl/Product
Impacted products
Vendor Product Version
gnu sasl *
debian debian_linux 13.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "GNU SASL",
          "vendor": "GNU",
          "versions": [
            {
              "lessThan": "2.2.4",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:gnu:sasl:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "EB37527E-FDD1-455A-BF76-7C2180F1A0EC",
              "versionEndExcluding": "2.2.4",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
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              "matchCriteriaId": "204FC6CC-9DAC-45FB-8A9F-C9C8EDD29D54",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "GNU SASL before 2.2.4 lacks sanitization of a short challenge in _gsasl_ntlm_client_step in the NTLM client, which could result in memory disclosure via a crafted server."
    }
  ],
  "id": "CVE-2026-56968",
  "lastModified": "2026-06-29T23:00:33.150",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 3.7,
          "baseSeverity": "LOW",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
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        "impactScore": 1.4,
        "source": "cve@mitre.org",
        "type": "Secondary"
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          "attackVector": "NETWORK",
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          "baseSeverity": "MEDIUM",
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          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
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        "impactScore": 1.4,
        "source": "nvd@nist.gov",
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        "ssvcData": {
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          "options": [
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              "exploitation": "none"
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            {
              "automatable": "no"
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            {
              "technicalImpact": "partial"
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          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-23T17:31:41.785915Z",
          "version": "2.0.3"
        }
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  },
  "published": "2026-06-23T17:17:09.883",
  "references": [
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      "source": "cve@mitre.org",
      "tags": [
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      "url": "https://ftp.gnu.org/gnu/gsasl/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      "url": "https://lists.debian.org/debian-security-announce/2026/msg00259.html"
    },
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      "url": "https://lists.gnu.org/archive/html/help-gsasl/2026-06/msg00000.html"
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      "tags": [
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      "url": "https://www.gnu.org/software/gsasl/"
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  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "CWE-839"
        }
      ],
      "source": "cve@mitre.org",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-908"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Sightings

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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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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