CVE-2012-5340

SumatraPDF 2.1.1/MuPDF 1.0 allows remote attackers to cause an Integer Overflow in the lex_number...

7.8 HighPublic exploitFix available

CVE-2012-5340 is a high vulnerability (CVSS 7.8) in Artifex Mupdf, published January 23, 2020. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 5.73%, the 93rd percentile. Fixed in mupdf 1.2-2.

SumatraPDF 2.1.1/MuPDF 1.0 allows remote attackers to cause an Integer Overflow in the lex_number() function via a corrupt PDF file.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

5.73%Up 2.9 points since Feb 4, 2022

What each source reports

NVD Score used 7.8

SumatraPDF 2.1.1/MuPDF 1.0 allows remote attackers to cause an Integer Overflow in the lex_number() function via a corrupt PDF file.

Record: CVE-2012-5340
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0: 6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness: CWE-190
Updated: 2026-11-02

CVE List No score

SumatraPDF 2.1.1/MuPDF 1.0 allows remote attackers to cause an Integer Overflow in the lex_number() function via a corrupt PDF file.

Record: CVE-2012-5340
Updated: 2026-11-02

EUVDEUVD-2012-5262 No score

SumatraPDF 2.1.1/MuPDF 1.0 allows remote attackers to cause an Integer Overflow in the lex_number() function via a corrupt PDF file.

Record: EUVD-2012-5262
Updated: 2026-11-03

GitHub AdvisoriesGHSA-g8x3-qg8h-3qqr 7.8

SumatraPDF 2.1.1/MuPDF 1.0 allows remote attackers to cause an Integer Overflow in the lex_number...

SumatraPDF 2.1.1/MuPDF 1.0 allows remote attackers to cause an Integer Overflow in the lex_number() function via a corrupt PDF file.

Record: GHSA-g8x3-qg8h-3qqr
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-190
Updated: 2026-11-02

OSV 7.8

SumatraPDF 2.1.1/MuPDF 1.0 allows remote attackers to cause an Integer Overflow in the lex_number() function via a corrupt PDF file.

Record: CVE-2012-5340
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2012-5340 7.8

SumatraPDF 2.1.1/MuPDF 1.0 allows remote attackers to cause an Integer Overflow in the lex_number() function via a corrupt PDF file.

Record: DEBIAN-CVE-2012-5340
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2012-5340 7.8

SumatraPDF 2.1.1/MuPDF 1.0 allows remote attackers to cause an Integer Overflow in the lex_number() function via a corrupt PDF file.

Record: UBUNTU-CVE-2012-5340
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`mupdf` Debian:12	before 1.2-2	1.2-2
`mupdf` Debian:13	before 1.2-2	1.2-2
`mupdf` Debian:14	before 1.2-2	1.2-2

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	SumatraPDF 2.1.1/MuPDF 1.0 - Integer Overflow	2012-12-09

History

History
When	Changed	Sources
2026-11-03	affected
2026-11-03	aliases	EUVD
2026-11-02	created	CVE List, Exploit-DB, GitHub Advisories, NVD, OSV

Attack profile

How easy it is to exploit

What an attacker can affect

Exploit likelihood

What each source reports

Affected products

Affected packages

Public exploits

History

References