Vulnerability-Lookup

CVE-2026-62377 (GCVE-0-2026-62377)

Vulnerability from cvelistv5 – Published: 2026-08-18 21:22 – Updated: 2026-08-19 18:19

Title

libheif: Reachable assertion in HeifContext::get_track() aborts on a valid-but-empty HEIF sequence file (context.cc:2110)

Summary

libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.0 and earlier, a crafted HEIF sequence accepted by heif_context_read_from_memory() can leave the context with no registered sequence tracks and crash when heif_context_get_track(ctx, 0) is called. HeifContext::get_track() in libheif/context.cc executes assert(has_sequence()) before its normal error handling, so assert-enabled builds abort instead of allowing the public wrapper in libheif/api/libheif/heif_sequences.cc to return null. In release builds, removing the assertion lets the track_id zero path dereference m_tracks.begin()->second on an empty map, which is undefined behavior and typically crashes. The issue is reachable through documented public APIs after parsing attacker-controlled bytes. This issue is fixed in version 1.23.1.

Severity

4.3 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-19 18:03 UTC

CWE

CWE-617 - Reachable Assertion
CWE-908 - Use of Uninitialized Resource

Assigner

GitHub_M mitre root

References

4 references

URL	Tags
https://github.com/strukturag/libheif/security/ad…	x_refsource_CONFIRM
https://github.com/strukturag/libheif/issues/1844	x_refsource_MISC
https://github.com/strukturag/libheif/commit/e1a0…	x_refsource_MISC
https://github.com/strukturag/libheif/releases/ta…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
strukturag	libheif	Affected: < 1.23.1	guessed

Show details on NVD website

JSON

To clipboard

{
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                "id": "CVE-2026-62377",
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FKIE_CVE-2026-62377

Vulnerability from fkie_nvd - Published: 2026-08-18 22:17 - Updated: 2026-09-09 21:13

Severity

4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/strukturag/libheif/commit/e1a0bc1c1ae74f8075eaca30a1cdb2b9bee698d3
	security-advisories@github.com	https://github.com/strukturag/libheif/issues/1844
	security-advisories@github.com	https://github.com/strukturag/libheif/releases/tag/v1.23.1
	security-advisories@github.com	https://github.com/strukturag/libheif/security/advisories/GHSA-9ww4-9v47-m7pj

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "libheif",
          "vendor": "strukturag",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.23.1"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.0 and earlier, a crafted HEIF sequence accepted by heif_context_read_from_memory() can leave the context with no registered sequence tracks and crash when heif_context_get_track(ctx, 0) is called. HeifContext::get_track() in libheif/context.cc executes assert(has_sequence()) before its normal error handling, so assert-enabled builds abort instead of allowing the public wrapper in libheif/api/libheif/heif_sequences.cc to return null. In release builds, removing the assertion lets the track_id zero path dereference m_tracks.begin()-\u003esecond on an empty map, which is undefined behavior and typically crashes. The issue is reachable through documented public APIs after parsing attacker-controlled bytes. This issue is fixed in version 1.23.1."
    }
  ],
  "id": "CVE-2026-62377",
  "lastModified": "2026-09-09T21:13:25.910",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
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  "references": [
    {
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      "url": "https://github.com/strukturag/libheif/commit/e1a0bc1c1ae74f8075eaca30a1cdb2b9bee698d3"
    },
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      "source": "security-advisories@github.com",
      "url": "https://github.com/strukturag/libheif/issues/1844"
    },
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    }
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  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
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          "lang": "en",
          "value": "CWE-617"
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}

OPENSUSE-SU-2026:11416-1

Vulnerability from csaf_opensuse - Published: 2026-08-01 00:00 - Updated: 2026-09-16 21:24

Summary

gdk-pixbuf-loader-libheif-1.23.1-1.1 on GA media

Severity

Moderate

Scope

4 vulnerabilities in this advisory, including CVE-2026-62377.

CVE-2026-62377

3.3 (Low)


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

Recommended: 48 products

Open the full advisory

OPENSUSE-SU-2026:21644-1

Vulnerability from csaf_opensuse - Published: 2026-08-25 06:33 - Updated: 2026-09-16 21:47

Summary

Security update for libheif

Severity

Moderate

Scope

4 vulnerabilities in this advisory, including CVE-2026-62377.

CVE-2026-62377

3.3 (Low)


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

Recommended: 42 products

Open the full advisory

SUSE-SU-2026:23320-1

Vulnerability from csaf_suse - Published: 2026-08-25 06:32 - Updated: 2026-09-16 20:14

Summary

Security update for libheif

Severity

Moderate

Scope

4 vulnerabilities in this advisory, including CVE-2026-62377.

CVE-2026-62377

3.3 (Low)


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

Recommended: 68 products

Open the full advisory

ubuntu-cve-2026-62377

Vulnerability from osv_ubuntu

Published

2026-08-18 22:17

Modified

2026-09-16 17:25

Summary

Details

Severity

4.3 (Medium)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-62377	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-62377	REPORT
	https://github.com/strukturag/libheif/commit/e1a0…	REPORT
	https://github.com/strukturag/libheif/issues/1844	REPORT
	https://github.com/strukturag/libheif/releases/ta…	REPORT
	https://github.com/strukturag/libheif/security/ad…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "heif-gdk-pixbuf",
            "binary_version": "1.21.2-3ubuntu0.5"
          },
          {
            "binary_name": "heif-thumbnailer",
            "binary_version": "1.21.2-3ubuntu0.5"
          },
          {
            "binary_name": "heif-view",
            "binary_version": "1.21.2-3ubuntu0.5"
          },
          {
            "binary_name": "libheif-examples",
            "binary_version": "1.21.2-3ubuntu0.5"
          },
          {
            "binary_name": "libheif-plugin-aomdec",
            "binary_version": "1.21.2-3ubuntu0.5"
          },
          {
            "binary_name": "libheif-plugin-aomenc",
            "binary_version": "1.21.2-3ubuntu0.5"
          },
          {
            "binary_name": "libheif-plugin-dav1d",
            "binary_version": "1.21.2-3ubuntu0.5"
          },
          {
            "binary_name": "libheif-plugin-ffmpegdec",
            "binary_version": "1.21.2-3ubuntu0.5"
          },
          {
            "binary_name": "libheif-plugin-j2kdec",
            "binary_version": "1.21.2-3ubuntu0.5"
          },
          {
            "binary_name": "libheif-plugin-j2kenc",
            "binary_version": "1.21.2-3ubuntu0.5"
          },
          {
            "binary_name": "libheif-plugin-jpegdec",
            "binary_version": "1.21.2-3ubuntu0.5"
          },
          {
            "binary_name": "libheif-plugin-jpegenc",
            "binary_version": "1.21.2-3ubuntu0.5"
          },
          {
            "binary_name": "libheif-plugin-kvazaar",
            "binary_version": "1.21.2-3ubuntu0.5"
          },
          {
            "binary_name": "libheif-plugin-libde265",
            "binary_version": "1.21.2-3ubuntu0.5"
          },
          {
            "binary_name": "libheif-plugin-rav1e",
            "binary_version": "1.21.2-3ubuntu0.5"
          },
          {
            "binary_name": "libheif-plugin-svtenc",
            "binary_version": "1.21.2-3ubuntu0.5"
          },
          {
            "binary_name": "libheif-plugin-x265",
            "binary_version": "1.21.2-3ubuntu0.5"
          },
          {
            "binary_name": "libheif-plugins-all",
            "binary_version": "1.21.2-3ubuntu0.5"
          },
          {
            "binary_name": "libheif1",
            "binary_version": "1.21.2-3ubuntu0.5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "libheif",
        "purl": "pkg:deb/ubuntu/libheif@1.21.2-3ubuntu0.5?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.20.2-1",
        "1.20.2-2",
        "1.20.2-2build1",
        "1.20.2-2build2",
        "1.20.2-2ubuntu1",
        "1.21.2-1",
        "1.21.2-3",
        "1.21.2-3ubuntu0.1",
        "1.21.2-3ubuntu0.2",
        "1.21.2-3ubuntu0.3",
        "1.21.2-3ubuntu0.4",
        "1.21.2-3ubuntu0.5"
      ]
    }
  ],
  "aliases": [],
  "details": "libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.0 and earlier, a crafted HEIF sequence accepted by heif_context_read_from_memory() can leave the context with no registered sequence tracks and crash when heif_context_get_track(ctx, 0) is called. HeifContext::get_track() in libheif/context.cc executes assert(has_sequence()) before its normal error handling, so assert-enabled builds abort instead of allowing the public wrapper in libheif/api/libheif/heif_sequences.cc to return null. In release builds, removing the assertion lets the track_id zero path dereference m_tracks.begin()-\u003esecond on an empty map, which is undefined behavior and typically crashes. The issue is reachable through documented public APIs after parsing attacker-controlled bytes. This issue is fixed in version 1.23.1.",
  "id": "UBUNTU-CVE-2026-62377",
  "modified": "2026-09-16T17:25:16Z",
  "published": "2026-08-18T22:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-62377"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-62377"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/strukturag/libheif/commit/e1a0bc1c1ae74f8075eaca30a1cdb2b9bee698d3"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/strukturag/libheif/issues/1844"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/strukturag/libheif/releases/tag/v1.23.1"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/strukturag/libheif/security/advisories/GHSA-9ww4-9v47-m7pj"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-62377"
  ]
}

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.

Action not permitted

CVE-2026-62377 (GCVE-0-2026-62377)

FKIE_CVE-2026-62377

OPENSUSE-SU-2026:11416-1

OPENSUSE-SU-2026:21644-1

SUSE-SU-2026:23320-1

ubuntu-cve-2026-62377

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature

Related by attack behaviour