CVE-2012-4988

Heap-based buffer overflow in the xjpegls.dll (aka JLS, JPEG-LS, or JPEG lossless) format plugin...

9.3 HighPublic exploit

Heap-based buffer overflow in the xjpegls.dll (aka JLS, JPEG-LS, or JPEG lossless) format plugin in XnView 1.99 and 1.99.1 allows remote attackers to execute arbitrary code via a crafted JLS image file.

Exploit likelihood

9.85%Down 3.7 points since Feb 4, 2022

What each source reports

NVD Score used 9.3

Record: CVE-2012-4988
CVSS 2.0: 9.3 HighAV:N/AC:M/Au:N/C:C/I:C/A:C
Weakness: CWE-119
Updated: 2026-11-02

CVE List No score

Record: CVE-2012-4988
Updated: 2026-11-02

EUVDEUVD-2012-4912 No score

Record: EUVD-2012-4912
Updated: 2026-11-03

GitHub AdvisoriesGHSA-vvfx-3pcm-35qm No score

Heap-based buffer overflow in the xjpegls.dll (aka JLS, JPEG-LS, or JPEG lossless) format plugin...

Record: GHSA-vvfx-3pcm-35qm
Weakness: CWE-119
Updated: 2026-11-02

Affected products

xnview

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	XnView 1.99.1 - '.JLS' File Decompression Heap Overflow	2012-10-04

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2012-4988 is a high vulnerability (CVSS 9.3) in Xnview, published July 9, 2014. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 9.85%, the 95th percentile. No source names a fixed version.