5

CVE-2009-2621: squid-cache squid

CVSS: 5.0v2.0MediumModified
Published 28-07-2009Last modified 07-08-2024

Vulnerability summary

CVE-2009-2621 is a medium (CVSS 5.0) vulnerability in squid-cache squid. EPSS estimates a 23.05% chance of exploitation in the next 30 days, higher than 97.7% of scored vulnerabilities.

Overall risk
25/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.0/10
010
Medium · v2.0 (NVD)
EPSS score
23.05%
0%100%
High · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2

Timeline

  1. 28-07-2009
    PublishedVulnerability first disclosed.
  2. 07-08-2024
    Last modifiedVulnerability information updated.

Description

Squid 3.0 through 3.0.STABLE16 and 3.1 through 3.1.0.11 does not properly enforce "buffer limits and related bound checks," which allows remote attackers to cause a denial of service via (1) an incomplete request or (2) a request with a large header size, related to (a) HttpMsg.cc and (b) client_side.cc.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

23.05%

Chance of exploitation in the next 30 days

Percentile

98%

Versus all other CVEs

30-day change

0.00 pp

From 23.05% on 19-09-2026

19-09-202619-10-2026
EPSS score
23.05%

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

Affected systems

Squid-cache1 product
  • squidEOL3.0 | 3.0:rc1 | 3.0:rc4 | 3.1 | 3.1.0.1 | 3.1.0.2 | 3.1.0.3 | 3.1.0.4

1 vendor · 1 product

References

8 links