Medium 5.5Published May 17, 2023

CVE-2023-2731A NULL pointer dereference flaw was found in Libtiff's LZWDecode() function in the libtiff/tif_lzw.c file.

Updated under an hour ago (Nov 2, 2026, 12:23 AM ET)

Does this affect you?

It affects libtiff and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stackFree account, 3 products Every CVE for libtiff Exploited in the last 30 days

A NULL pointer dereference flaw was found in Libtiff's LZWDecode() function in the libtiff/tif_lzw.c file. This flaw allows a local attacker to craft specific input data that can cause the program to dereference a NULL pointer when decompressing a TIFF format file, resulting in a program crash or denial of service.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-476
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

libtiff libtiff libtiff:libtiff	before 4.5.0	NVD
fedoraproject fedora fedoraproject:fedora	38	NVD
redhat enterprise_linux redhat:enterprise_linux	9.0	NVD

References

References

https://access.redhat.com/security/cve/CVE-2023-2731	third-party-advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2207635	issue-tracking, patch, third-party-advisory
https://github.com/libsdl-org/libtiff/commit/9be22b639ea69e102d3847dca4c53ef025e9527b	patch
https://gitlab.com/libtiff/libtiff/-/issues/548	exploit, issue-tracking, patch, third-party-advisory
https://security.netapp.com/advisory/ntap-20230703-0009/

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.