CVE-2026-77219

Katalog CVE

CVSS 7.1 · High EPSS 0,13%

Kerentanan Out-of-bounds Read. Skor CVSS 3.1 7.1 (High) menurut vulncheck.com.

Deskripsi (NVD)

GNU Emacs before 31.0.91 contains an integer overflow in the PBM/PPM/PGM image loader that allows an attacker to leak heap memory contents by supplying a crafted image with large dimensions and an elevated max color index. The image loader multiplies image dimensions and channel count using signed integer arithmetic; for sufficiently large values, the result wraps to a negative number, bypassing the bounds check and causing the pixel reader to access heap memory past the end of the allocated buffer. The over-read contents are interpreted as pixel color values and rendered on screen.

Rincian

Terbit di NVD

21 Agustus 2026

Terakhir diubah

12 Oktober 2026

Status NVD

Deferred

CVSS 3.1

7.1 (High), sumber vulncheck.com
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-125: Out-of-bounds Read
CWE-190: Integer Overflow or Wraparound

EPSS (30 hari)

0,13% peluang dieksploitasi; lebih tinggi dari 2,1% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://debbugs.gnu.org/cgi/bugreport.cgi?bug=81344
• https://github.com/emacs-mirror/emacs/commit/b07e634e4cf45162ae0178e32092b040587f2c6c
• https://github.com/emacs-mirror/emacs/releases/tag/emacs-31.0.91
• https://www.vulncheck.com/advisories/gnu-emacs-heap-over-read-via-pbm-ppm-pgm-image-loader