7.5

CVE-2021-36493: xpdfreader xpdf Out-of-bounds Write

CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2021-36493
Published 03-02-2023Last modified 27-03-2025
Open JSON

Vulnerability summary

CVE-2021-36493 is a high (CVSS 7.5) Out-of-bounds Write vulnerability in xpdfreader xpdf. EPSS estimates a 0.88% chance of exploitation in the next 30 days, higher than 58.4% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.88%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 03-02-2023
    PublishedVulnerability first disclosed.
  2. 27-03-2025
    Last modifiedVulnerability information updated.

Description

Buffer Overflow vulnerability in pdfimages in xpdf 4.03 allows attackers to crash the application via crafted command.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.88%

Chance of exploitation in the next 30 days

Percentile

58%

Versus all other CVEs

30-day change

0.00 pp

From 0.88% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.88%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (forum.xpdfreader.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Ubuntu1 product
  • ipeAll versions (No fix recorded)
Xpdfreader1 product

2 vendors · 2 products

References

3 links