Netpbm before 10.86.51, 11.02.30, and 11.15.08 Heap Overflow via jbigtopnm
Netpbm versions before 10.86.51, 11.02.30, and 11.15.08 are affected through the jbigtopnm program. No vendor severity rating is given. The fix is in 11.15.08.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
- Exploited
- No known exploitation
- Fix
- Fixed in 10.86.51, 11.02.30, 11.15.08
- Who is exposed
- Specific setups only
Do first: Check whether your setup matches what the bug needs. The jbigtopnm program is given a ridiculously large input image.
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- Published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 15/100 · provisional
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Specific setups only
- Fix
- Fixed in 10.86.51, 11.02.30, 11.15.08
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
Netpbm, a widely used open-source suite of image-processing tools, is affected by a flaw in its jbigtopnm converter. A specially crafted JBIG file can trigger a memory overflow that may crash the program or, in some cases, allow an attacker to run arbitrary code.
Read the original description
Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains an integer overflow in jbigtopnm that causes heap buffer overflow when computing output buffer size. Attackers can supply a crafted multi-plane JBIG file with large header dimensions so jbg_dec_merge_planes() overflows the undersized buffer, causing crashes or potentially code execution.
What to do
Check whether your setup matches what the bug needs.
The jbigtopnm program is given a ridiculously large input image.Upgrade to a fixed version: 10.86.51, 11.02.30, 11.15.08.
Timeline
- CVE published
- First seen by cve.now
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Netpbm Netpbm
fixed in 10.86.51; From 11.0 · fixed in 11.02.30; From 11.03 · fixed in 11.15.08
Evidence 6
- Patch
- Link
- Link
- Link
- Link
- Link
Corrections
None so far.
Something wrong on this page? Report an error. Every fix is listed here.
Questions about CVE-2026-120436
What does this mean?
jbigtopnm contains a buffer overrun when it is given a ridiculously large input image. The overrun corrupts memory. The advisory does not say what an attacker could gain beyond that.Source: svn.code.sf.net
Am I affected, and how do I check?
Netpbm releases before 10.86.51, releases from 11.0 up to 11.02.30, and releases from 11.03 up to 11.15.08 are affected. To check, compare the installed Netpbm version with these ranges and confirm whether jbigtopnm is installed.Source: svn.code.sf.net
What should I do about it?
Move to the fixed release for the branch in use: 10.86.51, 11.02.30, or 11.15.08. The advisory lists 11.15.08 as the fixed release.Source: svn.code.sf.net
Is it being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data