Skip to content
Fencer Intel
high 7.8

CVE-2012-5340 json

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.

published 2020-01-23 6 y ago modified 2026-06-16 4 mo ago also EUVD-2012-5262

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.7%
EPSS 5.7% chance of exploitation in 30 days, percentile 93%
public exploits
1
Exploit-DB

Summary

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.

Patch / fix

  • mupdf Debian 14, Debian 13, Debian 12 1.2-2

debian advisories DEBIAN-CVE-2012-5340

Timeline

  1. First public exploit (EDB-23246)
  2. Published

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

5.73% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-23246 SumatraPDF 2.1.1/MuPDF 1.0 - Integer Overflow dos, 2012-12-09

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.