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Fencer Vulns
high 7.8

CVE-2023-0996 json

There is a vulnerability in the strided image data parsing code in the emscripten wrapper for libheif.

published 2023-02-24 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-12980

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 23%
public exploits
0
none known

Summary

There is a vulnerability in the strided image data parsing code in the emscripten wrapper for libheif. An attacker could exploit this through a crafted image file to cause a buffer overflow in linear memory during a memcpy call.

Patch / fix

  • libheif Debian 14, Debian 13, Debian 12 1.15.1-1

debian advisories DEBIAN-CVE-2023-0996

  • libheif Ubuntu Pro 20.04 LTS 1.6.1-1ubuntu0.1~esm1
  • libheif Ubuntu Pro 22.04 LTS 1.12.0-2ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2023-0996

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libheif SLE Module for Desktop Applications 15 SP4, openSUSE Leap 15.4 1.12.0-150400.3.8.1

suse advisories SUSE-SU-2023:1766-1

  • libheif openSUSE Tumbleweed 1.19.5-2.1

opensuse advisories openSUSE-SU-2024:14579-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-0996 updated

libheif: new security issues

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
19 mo ago

Exploit prediction

0.31% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

  • Struktur libheif

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.