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Vulnerability · Published Nov 2, 2026 · Assigned by VulnCheck

CVE-2026-120431Netpbm before 10.86.51, 11.02.29, and 11.15.07 sgitopnm Heap Buffer Overflow

High 7.8

In plain English

A high-severity heap buffer overflow in Netpbm from Netpbm. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities).

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.1%top 95.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

Netpbm before 10.86.51, 11.x before 11.02.29, and 11.03 before 11.15.07 contains a heap-based buffer overflow in sgitopnm's readChannels() function when processing RLE-compressed SGI images. Attackers can supply crafted SGI files with oversized offset table lengths to write controlled data past the heap buffer, causing crashes or potential code execution.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12netpbm-freeno fix listedDEBIAN-CVE-2026-120431
Debian:13netpbm-freeno fix listedDEBIAN-CVE-2026-120431
Debian:14netpbm-freeno fix listedDEBIAN-CVE-2026-120431
Ubuntu:22.04:LTSnetpbm-freeno fix listedUBUNTU-CVE-2026-120431
Ubuntu:24.04:LTSnetpbm-freeno fix listedUBUNTU-CVE-2026-120431
Ubuntu:26.04:LTSnetpbm-freeno fix listedUBUNTU-CVE-2026-120431
Ubuntu:26.10netpbm-freeno fix listedUBUNTU-CVE-2026-120431

Affected products (as reported)

VendorProductVersions
Netpbm Netpbm 0 – before 10.86.5111.0 – before 11.02.2911.03 – before 11.15.07

Weakness: CWE-122 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References