Description
A flaw was found in GIMP. This issue is a heap buffer over-read in GIMP PCX file loader due to an off-by-one error. A remote attacker could exploit this by convincing a user to open a specially crafted PCX image. Successful exploitation could lead to out-of-bounds memory disclosure and a possible application crash, resulting in a Denial of Service (DoS).
Affected products
gimp: gimp; redhat: enterprise linux
References10
- access.redhat.com/security/cve/CVE-2026-4887 MitigationVendor Advisory
- bugzilla.redhat.com/show_bug.cgi?id=2451669 Issue TrackingVendor Advisory
- gitlab.gnome.org/GNOME/gimp/-/issues/15960 ExploitIssue Tracking
- access.redhat.com/errata/RHSA-2026:16484
- access.redhat.com/errata/RHSA-2026:17533
- access.redhat.com/errata/RHSA-2026:19362
- access.redhat.com/errata/RHSA-2026:20552
- access.redhat.com/errata/RHSA-2026:20553
- access.redhat.com/errata/RHSA-2026:20554
- access.redhat.com/errata/RHSA-2026:20691
Metrics
- CVSS 3.1
-
7.1
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H - EPSS — exploit probability
- 1% percentile: 52 · as of 12 November 2026
- CWE
- CWE-193
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.