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CVE-2026-26740
Component Overview
Vulnerability Overview
Name
CVE-2026-26740
Source
NVD (
link
)
Debian (
link
)
Description
Buffer Overflow vulnerability in giflib v.5.2.2 allows a remote attacker to cause a denial of service via the EGifGCBToExtension overwriting an existing Graphic Control Extension block without validating its allocated size.
CWEs
CWE-787
Published Date
Mar 18, 2026
Updated Date
Jun 17, 2026
Workaround
-
Advisories
https://github.com/zakkanijia/POC/blob/main/giflib/giftool/giflib_giftool_gce_len_heap_oobwrite_disclosure.md
Exploit
Analysis
#
Affected Component
Analysis
giflib
Exploitable
Vulnerability Ratings
#
8.2
CVSSv31
NaN
other
Others affected components
#
Name
Project
Project Version
Version
Status
giflib
buildroot
2025.02.x
5.2.2
Exploitable
giflib
buildroot
master
6.1.3
Not Affected
giflib
openwrt
openwrt-25.12
5.2.2-r2
Exploitable
giflib
yocto
kirkstone
5.2.2
Exploitable
giflib
yocto
master
6.1.2
Not Affected
giflib
yocto
scarthgap
5.2.2
Exploitable