Vulnerability-Lookup

OESA-2025-2423 (CVE-2025-61962)

Vulnerability from osv_openeuler – Published: 2025-10-17 11:09 – Updated: 2026-08-06 11:09 – Source website

Summary

fetchmail security update

Details

Fetchmail is a remote mail retrieval and forwarding utility intended for use over on-demand TCP/IP links, like SLIP or PPP connections. Fetchmail supports every remote-mail protocol currently in use on the Internet (POP2, POP3, RPOP, APOP, KPOP, all IMAPs, ESMTP ETRN, IPv6, and IPSEC) for retrieval. Then Fetchmail forwards the mail through SMTP so you can read it through your favorite mail client.

Security Fix(es):

In fetchmail before 6.5.6, the SMTP client can crash when authenticating upon receiving a 334 status code in a malformed context. This vulnerability is classified as CWE-142. The product receives input from an upstream component but does not neutralize or incorrectly neutralizes special elements that could be interpreted as value delimiters when they are sent to a downstream component, which impacts availability.(CVE-2025-61962)

Severity

5.9 (Medium)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-61962	ADVISORY

JSON

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{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "fetchmail-6.4.22-2.oe2003sp4.aarch64.rpm",
          "fetchmail-debuginfo-6.4.22-2.oe2003sp4.aarch64.rpm",
          "fetchmail-debugsource-6.4.22-2.oe2003sp4.aarch64.rpm"
        ],
        "noarch": [
          "fetchmail-help-6.4.22-2.oe2003sp4.noarch.rpm"
        ],
        "src": [
          "fetchmail-6.4.22-2.oe2003sp4.src.rpm"
        ],
        "x86_64": [
          "fetchmail-6.4.22-2.oe2003sp4.x86_64.rpm",
          "fetchmail-debuginfo-6.4.22-2.oe2003sp4.x86_64.rpm",
          "fetchmail-debugsource-6.4.22-2.oe2003sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP4",
        "name": "fetchmail",
        "purl": "pkg:rpm/openEuler/fetchmail\u0026distro=openEuler-20.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.4.22-2.oe2003sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "Fetchmail is a remote mail retrieval and forwarding utility intended for use over on-demand TCP/IP links, like SLIP or PPP connections. Fetchmail supports every remote-mail protocol currently in use on the Internet (POP2, POP3, RPOP, APOP, KPOP, all IMAPs, ESMTP ETRN, IPv6, and IPSEC) for retrieval. Then Fetchmail forwards the mail through SMTP so you can read it through your favorite mail client.\r\n\r\nSecurity Fix(es):\n\nIn fetchmail before 6.5.6, the SMTP client can crash when authenticating upon receiving a 334 status code in a malformed context. This vulnerability is classified as CWE-142. The product receives input from an upstream component but does not neutralize or incorrectly neutralizes special elements that could be interpreted as value delimiters when they are sent to a downstream component, which impacts availability.(CVE-2025-61962)",
  "id": "OESA-2025-2423",
  "modified": "2026-08-06T11:09:30Z",
  "published": "2025-10-17T11:09:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2423"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-61962"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "fetchmail security update",
  "upstream": [
    "CVE-2025-61962"
  ]
}

CVE-2025-61962 (GCVE-0-2025-61962)

Vulnerability from cvelistv5 – Published: 2025-10-04 00:00 – Updated: 2025-11-04 21:14

Summary

In fetchmail before 6.5.6, the SMTP client can crash when authenticating upon receiving a 334 status code in a malformed context.

Severity

5.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-10-06 14:20 UTC

CWE

CWE-142 - Improper Neutralization of Value Delimiters

Assigner

mitre mitre root

References

4 references

URL	Tags
https://www.openwall.com/lists/oss-security/2025/…
https://www.fetchmail.info/fetchmail-SA-2025-01.txt
https://gitlab.com/fetchmail/fetchmail/-/commit/4…
http://www.openwall.com/lists/oss-security/2025/10/04/3

Impacted products

1 product

Vendor	Product	Version
fetchmail	fetchmail	Affected: 5.9.9 , < 6.5.6 (semver) cpe:2.3:a:fetchmail:fetchmail::::::::

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-61962",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-06T14:20:46.927097Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-06T14:20:57.032Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-04T21:14:11.806Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2025/10/04/3"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "fetchmail",
          "vendor": "fetchmail",
          "versions": [
            {
              "lessThan": "6.5.6",
              "status": "affected",
              "version": "5.9.9",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:fetchmail:fetchmail:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.5.6",
                  "versionStartIncluding": "5.9.9",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In fetchmail before 6.5.6, the SMTP client can crash when authenticating upon receiving a 334 status code in a malformed context."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-142",
              "description": "CWE-142 Improper Neutralization of Value Delimiters",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-04T02:51:57.449Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://www.openwall.com/lists/oss-security/2025/10/03/2"
        },
        {
          "url": "https://www.fetchmail.info/fetchmail-SA-2025-01.txt"
        },
        {
          "url": "https://gitlab.com/fetchmail/fetchmail/-/commit/4c3cebfa4e659fb778ca2cae0ccb3f69201609a8"
        }
      ],
      "source": {
        "discovery": "INTERNAL"
      },
      "x_generator": {
        "engine": "enrichogram 0.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2025-61962",
    "datePublished": "2025-10-04T00:00:00.000Z",
    "dateReserved": "2025-10-04T00:00:00.000Z",
    "dateUpdated": "2025-11-04T21:14:11.806Z",
    "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.

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.
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OESA-2025-2423 (CVE-2025-61962)

CVE-2025-61962 (GCVE-0-2025-61962)

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