FKIE_CVE-2025-61600

Vulnerability from fkie_nvd - Published: 2025-10-02 22:15 - Updated: 2025-10-06 14:57
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Stalwart is a mail and collaboration server. Versions 0.13.3 and below contain an unbounded memory allocation vulnerability in the IMAP protocol parser which allows remote attackers to exhaust server memory, potentially triggering the system's out-of-memory (OOM) killer and causing a denial of service. The CommandParser implementation enforces size limits on its dynamic buffer in most parsing states, but several state handlers omit these validation checks. This issue is fixed in version 0.13.4. A workaround for this issue is to implement rate limiting and connection monitoring at the network level, however this does not provide complete protection.
References
security-advisories@github.comhttps://github.com/stalwartlabs/stalwart/commit/a8e631e881bded8128358732f18e02ca94a4e677
security-advisories@github.comhttps://github.com/stalwartlabs/stalwart/releases/tag/v0.13.4
security-advisories@github.comhttps://github.com/stalwartlabs/stalwart/security/advisories/GHSA-8jqj-qj5p-v5rr
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Stalwart is a mail and collaboration server. Versions 0.13.3 and below contain an unbounded memory allocation vulnerability in the IMAP protocol parser which allows remote attackers to exhaust server memory, potentially triggering the system\u0027s out-of-memory (OOM) killer and causing a denial of service. The CommandParser implementation enforces size limits on its dynamic buffer in most parsing states, but several state handlers omit these validation checks. This issue is fixed in version 0.13.4. A workaround for this issue is to implement rate limiting and connection monitoring at the network level, however this does not provide complete protection."
    }
  ],
  "id": "CVE-2025-61600",
  "lastModified": "2025-10-06T14:57:05.000",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-10-02T22:15:38.063",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/stalwartlabs/stalwart/commit/a8e631e881bded8128358732f18e02ca94a4e677"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/stalwartlabs/stalwart/releases/tag/v0.13.4"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/stalwartlabs/stalwart/security/advisories/GHSA-8jqj-qj5p-v5rr"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        },
        {
          "lang": "en",
          "value": "CWE-789"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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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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