Vulnerability-Lookup

OESA-2026-1124 (CVE-2025-66293)

Vulnerability from osv_openeuler – Published: 2026-01-16 11:10 – Updated: 2026-08-06 11:10 – Source website

Summary

libpng security update

Details

The libpng package contains libraries used by other programs for reading and writing PNG format files. The PNG format was designed as a replacement for GIF and, to a lesser extent, TIFF, with many improvements and extensions and lack of patent problems.

Security Fix(es):

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to 1.6.52, an out-of-bounds read vulnerability in libpng's simplified API allows reading up to 1012 bytes beyond the png_sRGB_base[512] array when processing valid palette PNG images with partial transparency and gamma correction. The PNG files that trigger this vulnerability are valid per the PNG specification; the bug is in libpng's internal state management. Upgrade to libpng 1.6.52 or later.(CVE-2025-66293)

Severity

7.1 (High)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-66293	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "libpng-1.6.37-3.oe2003sp4.aarch64.rpm",
          "libpng-debuginfo-1.6.37-3.oe2003sp4.aarch64.rpm",
          "libpng-debugsource-1.6.37-3.oe2003sp4.aarch64.rpm",
          "libpng-devel-1.6.37-3.oe2003sp4.aarch64.rpm",
          "libpng-help-1.6.37-3.oe2003sp4.aarch64.rpm"
        ],
        "src": [
          "libpng-1.6.37-3.oe2003sp4.src.rpm"
        ],
        "x86_64": [
          "libpng-1.6.37-3.oe2003sp4.x86_64.rpm",
          "libpng-debuginfo-1.6.37-3.oe2003sp4.x86_64.rpm",
          "libpng-debugsource-1.6.37-3.oe2003sp4.x86_64.rpm",
          "libpng-devel-1.6.37-3.oe2003sp4.x86_64.rpm",
          "libpng-help-1.6.37-3.oe2003sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP4",
        "name": "libpng",
        "purl": "pkg:rpm/openEuler/libpng\u0026distro=openEuler-20.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.6.37-3.oe2003sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "The libpng package contains libraries used by other programs for reading and writing PNG format files.\nThe PNG format was designed as a replacement for GIF and, to a lesser extent, TIFF,\nwith many improvements and extensions and lack of patent problems.\r\n\r\nSecurity Fix(es):\n\nLIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to 1.6.52, an out-of-bounds read vulnerability in libpng\u0026apos;s simplified API allows reading up to 1012 bytes beyond the png_sRGB_base[512] array when processing valid palette PNG images with partial transparency and gamma correction. The PNG files that trigger this vulnerability are valid per the PNG specification; the bug is in libpng\u0026apos;s internal state management. Upgrade to libpng 1.6.52 or later.(CVE-2025-66293)",
  "id": "OESA-2026-1124",
  "modified": "2026-08-06T11:10:10Z",
  "published": "2026-01-16T11:10:10Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1124"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-66293"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "libpng security update",
  "upstream": [
    "CVE-2025-66293"
  ]
}

CVE-2025-66293 (GCVE-0-2025-66293)

Vulnerability from cvelistv5 – Published: 2025-12-03 20:33 – Updated: 2025-12-04 01:31

Title

LIBPNG has an out-of-bounds read in png_image_read_composite

Summary

Severity

7.1 (High)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-12-03 20:52 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

GitHub_M mitre root

References

7 references

URL	Tags
https://github.com/pnggroup/libpng/security/advis…	x_refsource_CONFIRM
https://github.com/pnggroup/libpng/issues/764	x_refsource_MISC
https://github.com/pnggroup/libpng/commit/788a624…	x_refsource_MISC
https://github.com/pnggroup/libpng/commit/a05a48b…	x_refsource_MISC
http://www.openwall.com/lists/oss-security/2025/12/03/6
http://www.openwall.com/lists/oss-security/2025/12/03/7
http://www.openwall.com/lists/oss-security/2025/12/03/8

Impacted products

1 product

Vendor	Product	Version
pnggroup	libpng	Affected: < 1.6.52

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-66293",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-12-03T20:52:13.771582Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-12-03T20:55:03.573Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/pnggroup/libpng/issues/764"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-12-04T01:31:47.574Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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          },
          {
            "url": "http://www.openwall.com/lists/oss-security/2025/12/03/7"
          },
          {
            "url": "http://www.openwall.com/lists/oss-security/2025/12/03/8"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "libpng",
          "vendor": "pnggroup",
          "versions": [
            {
              "status": "affected",
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            }
          ]
        }
      ],
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        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
            "version": "3.1"
          }
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      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-125",
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              "lang": "en",
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      "providerMetadata": {
        "dateUpdated": "2025-12-03T20:33:57.086Z",
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      },
      "references": [
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          "tags": [
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          ],
          "url": "https://github.com/pnggroup/libpng/security/advisories/GHSA-9mpm-9pxh-mg4f"
        },
        {
          "name": "https://github.com/pnggroup/libpng/issues/764",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/pnggroup/libpng/issues/764"
        },
        {
          "name": "https://github.com/pnggroup/libpng/commit/788a624d7387a758ffd5c7ab010f1870dea753a1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/pnggroup/libpng/commit/788a624d7387a758ffd5c7ab010f1870dea753a1"
        },
        {
          "name": "https://github.com/pnggroup/libpng/commit/a05a48b756de63e3234ea6b3b938b8f5f862484a",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/pnggroup/libpng/commit/a05a48b756de63e3234ea6b3b938b8f5f862484a"
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      "source": {
        "advisory": "GHSA-9mpm-9pxh-mg4f",
        "discovery": "UNKNOWN"
      },
      "title": "LIBPNG has an out-of-bounds read in png_image_read_composite"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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    "cveId": "CVE-2025-66293",
    "datePublished": "2025-12-03T20:33:57.086Z",
    "dateReserved": "2025-11-26T23:11:46.392Z",
    "dateUpdated": "2025-12-04T01:31:47.574Z",
    "state": "PUBLISHED"
  },
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  "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.

Detection rules are retrieved from Rulezet.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.