CVE-2026-4887Public exploit

Memory disclosure and crash via PCX off-by-one

Published Mar 26, 2026 · Updated Mar 26, 2026

Heap buffer over-read in GIMP on Red Hat Enterprise Linux 7, 8, and 9 allows remote attackers to disclose memory or crash GIMP via a crafted PCX file. The PCX loader's bytesperline validation contains an off-by-one error that permits processing to read beyond the allocated heap buffer. Exploitation requires GIMP to be installed and a user to open an untrusted PCX image; reported effects are limited to memory disclosure and an application crash.

CVSS severity6.1
Medium
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer over-read in GIMP on Red Hat Enterprise Linux 7, 8, and 9 allows remote attackers to disclose memory or crash GIMP via a crafted PCX file. The PCX loader's bytesperline validation contains an off-by-one error that permits processing to read beyond the allocated heap buffer. Exploitation requires GIMP to be installed and a user to open an untrusted PCX image; reported effects are limited to memory disclosure and an application crash.

The record

CVE
CVE-2026-4887
Published
Mar 26, 2026
Updated
Mar 26, 2026
Vendor
389 Directory Server
Product
Red Hat Enterprise Linux 7
Classifications
CWE-193, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

389 Directory Server · Red Hat Enterprise Linux 7Affected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 9Affected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 8Affected versions are unavailable in this record.

Published CVSS scores

7.1NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
6.1Red HatCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-193Off-by-one Error
T1204.002Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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