Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2010-0639

31
FAUCET Score

CVE-2010-0639 describes a denial-of-service vulnerability in Squid proxy servers, specifically affecting versions 2.x before 2.6.STABLE24, 2.7 before 2.7.STABLE8, and 3.0 before 3.0.STABLE24. This flaw allows remote attackers to crash the Squid daemon by sending crafted packets to the HTCP port, leading to a NULL pointer dereference. Rated with a CVSS score of 5.0, it is a network-exploitable vulnerability requiring low attack complexity, resulting in a partial availability impact. Despite its age and high EPSS score, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.0CPE matchmatch criteria
cpe:2.3:a:squid-cache:squid:2.0:*:*:*:*:*:*:*
2.1CPE matchmatch criteria
cpe:2.3:a:squid-cache:squid:2.1:*:*:*:*:*:*:*
2.2CPE matchmatch criteria
cpe:2.3:a:squid-cache:squid:2.2:*:*:*:*:*:*:*
2.3CPE matchmatch criteria
cpe:2.3:a:squid-cache:squid:2.3:*:*:*:*:*:*:*
2.4CPE matchmatch criteria
cpe:2.3:a:squid-cache:squid:2.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
30.56%
Probability of exploitation in next 30 days
EPSS Percentile
98.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.3056 is in the 98th percentile among its peer group of 23,723 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2010-0639Low

squid: HTCP packet temporary DoS (SQUID-2010:2)

Feb 12, 2010

References

bugs.squid-cache.org / show_bug.cgi
lists.fedoraproject.org / pipermail/package-announce/2010-February/035961.html
lists.fedoraproject.org / pipermail/package-announce/2010-March/037159.html
osvdb.org / 62297
secunia.com / advisories/38812
Vendor Advisory
securityfocus.com / bid/38212
securitytracker.com / id
squid-cache.org / Advisories/SQUID-2010_2.txt
Vendor Advisory
squid-cache.org / Versions/v2/2.7/changesets/12600.patch
Patch
squid-cache.org / Versions/v3/3.0/changesets/3.0-ADV-2010_2.patch
Patch
vupen.com / english/advisories/2010/0371
Vendor Advisory
vupen.com / english/advisories/2010/0603
Vendor Advisory