CVE-2026-32775

HighPublic PoC

Published: 16 March 2026

Published

16 March 2026

Modified

21 April 2026

KEV Added

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Patch

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CVSS Score 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0001 0.5th percentile

Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-32775 is a high-severity Wrap or Wraparound (CWE-191) vulnerability in Libexif Project Libexif. Its CVSS base score is 7.4 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 0.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploitation for Privilege Escalation (T1068) and 1 other technique.

Threat & Defense Details

MITRE ATT&CK Enterprise TechniquesAI

T1068 Exploitation for Privilege Escalation Privilege Escalation

Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.

attack.mitre.org →

T1203 Exploitation for Client Execution Execution

Adversaries may exploit software vulnerabilities in client applications to execute code.

attack.mitre.org →

Why these techniques?

Integer underflow enables local memory corruption/RCE in EXIF-parsing apps (no privs, UI:N) matching local priv-esc and client-side exploitation vectors.

Confidence: MEDIUM · MITRE ATT&CK Enterprise v18.1

NVD Description

libexif through 0.6.25 has a flaw in decoding MakerNotes. If the exif_mnote_data_get_value function gets passed in a 0 size, the passed in-buffer would be overwritten due to an integer underflow.

Deeper analysisAI

CVE-2026-32775 is an integer underflow vulnerability in the libexif library, specifically in the exif_mnote_data_get_value function during MakerNotes decoding. When a zero size is passed, the function causes an underflow that overwrites the input buffer. The flaw affects libexif versions through 0.6.25 and is classified under CWE-191 (Integer Underflow), with a CVSS v3.1 base score of 7.4 (AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

A local attacker can exploit this vulnerability without privileges or user interaction, though it requires high attack complexity. Successful exploitation leads to high-impact confidentiality, integrity, and availability violations, potentially allowing arbitrary code execution or system compromise via crafted EXIF data processed by affected applications.

Mitigation is available via a patch in libexif commit 7df372e9d31d7c993a22b913c813a5f7ec4f3692, as detailed in GitHub issue #247. Security practitioners should update to a patched version of libexif and audit dependent applications that parse EXIF metadata from untrusted sources.