7.5

CVE-2005-2491: pcre

CVSS: 7.5v2.0HighModified
AliasesRHSA-2005:358RHSA-2005:761RHSA-2006:0197
Published 22-08-2005Last modified 07-08-2024
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Vulnerability summary

CVE-2005-2491 is a high (CVSS 7.5) vulnerability in pcre. EPSS estimates a 4.34% chance of exploitation in the next 30 days, higher than 91.1% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v2.0 (NVD)
EPSS score
4.34%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 22-08-2005
    PublishedVulnerability first disclosed.
  2. 07-08-2024
    Last modifiedVulnerability information updated.

Description

Integer overflow in pcre_compile.c in Perl Compatible Regular Expressions (PCRE) before 6.2, as used in multiple products such as Python, Ethereal, and PHP, allows attackers to execute arbitrary code via quantifier values in regular expressions, which leads to a heap-based buffer overflow.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

4.34%

Chance of exploitation in the next 30 days

Percentile

91%

Versus all other CVEs

30-day change

0.00 pp

From 4.34% on 21-09-2026

21-09-202621-10-2026
EPSS score
4.34%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Redhat14 products
  • exim< 0:4.43-1.RHEL4.5
  • exim-debuginfo< 0:4.43-1.RHEL4.5
  • exim-doc< 0:4.43-1.RHEL4.5
  • exim-mon< 0:4.43-1.RHEL4.5
  • exim-sa< 0:4.43-1.RHEL4.5
Debian6 products
  • gnumeric< 1.5.1-1
  • goffice< 0.1.0-3
  • pcre3< 6.3-1 | < 3.4-1.1woody1 | < 4.5-1.2sarge1 | < 6.3-0.1etch1
  • python2.1< 2.1.3-3.4 | < 2.1.3dfsg-1sarge1
  • python2.2< 2.2.1-4.8 | < 2.2.3dfsg-2sarge1
Pcre1 product

3 vendors · 21 products

References

80 links
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