Vulnerability-Lookup

GHSA-P6WP-HHX9-7JJ5

Vulnerability from github – Published: 2026-04-12 21:30 – Updated: 2026-04-12 21:30

Details

In libexif through 0.6.25, an integer underflow in size checking for Fuji and Olympus MakerNote decoding could be used by attackers to crash or leak information out of libexif-using programs.

Severity

4.0 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-40386"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-191"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-12T19:16:20Z",
    "severity": "MODERATE"
  },
  "details": "In libexif through 0.6.25, an integer underflow in size checking for Fuji and Olympus MakerNote decoding could be used by attackers to crash or leak information out of libexif-using programs.",
  "id": "GHSA-p6wp-hhx9-7jj5",
  "modified": "2026-04-12T21:30:18Z",
  "published": "2026-04-12T21:30:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40386"
    },
    {
      "type": "WEB",
      "url": "https://github.com/libexif/libexif/commit/dc6eac6e9655d14d0779d99e82d0f5f442d2f34b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-40386 (GCVE-0-2026-40386)

Vulnerability from cvelistv5 – Published: 2026-04-12 18:19 – Updated: 2026-04-14 16:33

Summary

In libexif through 0.6.25, an integer underflow in size checking for Fuji and Olympus MakerNote decoding could be used by attackers to crash or leak information out of libexif-using programs.

Severity

4 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-191 - Integer Underflow (Wrap or Wraparound)

Assigner

mitre

References

1 reference

URL	Tags
https://github.com/libexif/libexif/commit/dc6eac6…

Impacted products

1 product

Vendor	Product	Version
libexif project	libexif	Affected: 0 , ≤ 0.6.25 (semver)

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        "metrics": [
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                "id": "CVE-2026-40386",
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                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-14T15:18:57.747633Z",
                "version": "2.0.3"
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          "product": "libexif",
          "vendor": "libexif project",
          "versions": [
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              "lessThanOrEqual": "0.6.25",
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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.

Action not permitted

GHSA-P6WP-HHX9-7JJ5

CVE-2026-40386 (GCVE-0-2026-40386)

Tags

Sightings

Nomenclature