Vulnerability-Lookup

OESA-2026-4071 (CVE-2025-62291)

Vulnerability from osv_openeuler – Published: 2026-09-25 01:28 – Updated: 2026-09-25 01:28 – Source website

Summary

strongswan security update

Details

The strongSwan IPsec implementation supports both the IKEv1 and IKEv2 key exchange protocols in conjunction with the native NETKEY IPsec stack of the Linux kernel.

Security Fix(es):

In the eap-mschapv2 plugin (client-side) in strongSwan before 6.0.3, a malicious EAP-MSCHAPv2 server can send a crafted message of size 6 through 8, and cause an integer underflow that potentially results in a heap-based buffer overflow.(CVE-2025-62291)

Severity

8.1 (High)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-62291	ADVISORY

JSON

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{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "strongswan-5.7.2-21.oe2003sp4.aarch64.rpm",
          "strongswan-debuginfo-5.7.2-21.oe2003sp4.aarch64.rpm",
          "strongswan-debugsource-5.7.2-21.oe2003sp4.aarch64.rpm"
        ],
        "noarch": [
          "strongswan-help-5.7.2-21.oe2003sp4.noarch.rpm"
        ],
        "src": [
          "strongswan-5.7.2-21.oe2003sp4.src.rpm"
        ],
        "x86_64": [
          "strongswan-5.7.2-21.oe2003sp4.x86_64.rpm",
          "strongswan-debuginfo-5.7.2-21.oe2003sp4.x86_64.rpm",
          "strongswan-debugsource-5.7.2-21.oe2003sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP4",
        "name": "strongswan",
        "purl": "pkg:rpm/openEuler/strongswan\u0026distro=openEuler-20.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.7.2-21.oe2003sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "The strongSwan IPsec implementation supports both the IKEv1 and IKEv2 key exchange protocols in conjunction with the native NETKEY IPsec stack of the Linux kernel.\r\n\r\nSecurity Fix(es):\n\nIn the eap-mschapv2 plugin (client-side) in strongSwan before 6.0.3, a malicious EAP-MSCHAPv2 server can send a crafted message of size 6 through 8, and cause an integer underflow that potentially results in a heap-based buffer overflow.(CVE-2025-62291)",
  "id": "OESA-2026-4071",
  "modified": "2026-09-25T01:28:03Z",
  "published": "2026-09-25T01:28:03Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4071"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-62291"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "strongswan security update",
  "upstream": [
    "CVE-2025-62291"
  ]
}

CVE-2025-62291 (GCVE-0-2025-62291)

Vulnerability from cvelistv5 – Published: 2026-01-16 00:00 – Updated: 2026-01-16 19:07

Summary

Severity

8.1 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-16 18:50 UTC

CWE

CWE-191 - Integer Underflow (Wrap or Wraparound)

Assigner

mitre mitre root Scorecard

References

4 references

URL	Tags
https://github.com/strongswan/strongswan/releases
https://github.com/strongswan/strongswan/commits/…
https://www.strongswan.org/blog/2025/10/27/strong…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

1 product

Vendor	Product	Version
strongSwan	strongSwan	Affected: 4.2.12 , < 6.0.3 (semver) cpe:2.3:a:strongswan:strongswan::::::::

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-62291",
                "options": [
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                    "Exploitation": "none"
                  },
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-16T18:50:33.538280Z",
                "version": "2.0.3"
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        "providerMetadata": {
          "dateUpdated": "2026-01-16T18:51:12.740Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
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        "providerMetadata": {
          "dateUpdated": "2026-01-16T19:07:43.455Z",
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        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/11/msg00002.html"
          }
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        "title": "CVE Program Container"
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    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "strongSwan",
          "vendor": "strongSwan",
          "versions": [
            {
              "lessThan": "6.0.3",
              "status": "affected",
              "version": "4.2.12",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:a:strongswan:strongswan:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.3",
                  "versionStartIncluding": "4.2.12",
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                }
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the eap-mschapv2 plugin (client-side) in strongSwan before 6.0.3, a malicious EAP-MSCHAPv2 server can send a crafted message of size 6 through 8, and cause an integer underflow that potentially results in a heap-based buffer overflow."
        }
      ],
      "metrics": [
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            "baseSeverity": "HIGH",
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        "dateUpdated": "2026-01-16T18:23:50.089Z",
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      "references": [
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          "url": "https://github.com/strongswan/strongswan/releases"
        },
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          "url": "https://github.com/strongswan/strongswan/commits/master/src/libcharon/plugins/eap_mschapv2"
        },
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  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2025-62291",
    "datePublished": "2026-01-16T00:00:00.000Z",
    "dateReserved": "2025-10-10T00:00:00.000Z",
    "dateUpdated": "2026-01-16T19:07:43.455Z",
    "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.
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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-2026-4071 (CVE-2025-62291)

CVE-2025-62291 (GCVE-0-2025-62291)

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