HIGH

CVE-2012-5340

CVSS v3

7.8

HIGH

EPSS Score

5.7 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2012-5340 yet.

Full record on NVD

Description

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.

Technical details

Published: 2020-01-23
Exploit-DB: EDB-23246

Frequently asked questions

What is CVE-2012-5340?

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.

Is CVE-2012-5340 actively exploited?

Active exploitation of CVE-2012-5340 has not been confirmed. Its EPSS score was 5.7% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2012-5340?

CVE-2012-5340 has a CVSS v3 base score of 7.8 (HIGH severity).

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