🛡️ CVE-2026-71393

⚪ Unknown ✅ No Known Exploit CWE-190 NVD
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

GNU Emacs for Android is vulnerable to an integer overflow in sfnt_read_name_table() in src/sfnt.c. The function computes an allocation size using a 32-bit length value from a TrueType font file without overflow checking. On 32-bit targets, a crafted font causes the calculation to wrap, resulting in an undersized heap allocation. A subsequent read() call writes beyond the buffer, causing a heap buffer overflow. An attacker can deliver a malicious font file via email, EWW (Emacs Web Wowser), or documents with custom faces, causing Emacs to load it. This can lead to heap memory corruption and potential code execution.

This issue was fixed in commit d51a4722316efe0960994d371e1859099894d1ca

Weakness class

CVE-2026-71393 is classified as CWE-190: Integer Overflow or Wraparound. Arithmetic produces a value too large for its type and wraps around, so a later size or bounds check passes when it should not.

Affected software

CVE-2026-71393 is recorded against 1 package.

  • unknown

Timeline and source

Published on 10 August 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

cert.pl
git.savannah.gnu.org
www.gnu.org

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE CWE-190
Public Exploit ✅ No
Source NVD
Published 2026-08-10
Updated 2026-08-11
Modified 2026-08-10
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown — —

Similar Threats

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