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-2007-6239

25
FAUCET Score

CVE-2007-6239 describes a denial-of-service vulnerability affecting Squid 2.x before 2.6.STABLE17 and Squid 3.0. This flaw, located in the cache update reply processing, allows remote attackers to crash the proxy server through unspecified HTTP header manipulations leading to an Array memory leak. With a CVSS score of 5.0, it is considered a medium-severity vulnerability, requiring no authentication and having low attack complexity, but only impacting availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.0_patch2CPE matchmatch criteria
cpe:2.3:a:squid:squid_web_proxy_cache:2.0_patch2:*:*:*:*:*:*:*
2.1_patch2CPE matchmatch criteria
cpe:2.3:a:squid:squid_web_proxy_cache:2.1_patch2:*:*:*:*:*:*:*
2.3.stable4CPE matchmatch criteria
cpe:2.3:a:squid:squid_web_proxy_cache:2.3.stable4:*:*:*:*:*:*:*
2.3.stable5CPE matchmatch criteria
cpe:2.3:a:squid:squid_web_proxy_cache:2.3.stable5:*:*:*:*:*:*:*
2.4_stable2CPE matchmatch criteria
cpe:2.3:a:squid:squid_web_proxy_cache:2.4_stable2:*:*:*:*:*:*:*

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
26.86%
Probability of exploitation in next 30 days
EPSS Percentile
97.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.2686 is in the 98th percentile among its peer group of 23,684 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Patch Available

Vendor Patches (5)

debianpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 2.1Fixed in: squid-7:2.4.STABLE7-1.21as.11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: squid-7:2.5.STABLE3-8.3E
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: squid-7:2.5.STABLE14-1.4E.el4_6.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: squid-7:2.6.STABLE6-5.el5_1.2
View patch

Vendor Advisories (1)

redhatCVE-2007-6239Moderate

squid: DoS in cache updates

Dec 4, 2007

References

bugs.gentoo.org / show_bug.cgi
lists.opensuse.org / opensuse-security-announce/2008-01/msg00002.html
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/27910
PatchVendor Advisory
secunia.com / advisories/28091
Vendor Advisory
secunia.com / advisories/28109
Vendor Advisory
secunia.com / advisories/28350
Vendor Advisory
secunia.com / advisories/28381
Vendor Advisory
secunia.com / advisories/28403
Vendor Advisory
secunia.com / advisories/28412
Vendor Advisory
secunia.com / advisories/28814
Vendor Advisory
secunia.com / advisories/34467
Vendor Advisory
security.gentoo.org / glsa/glsa-200801-05.xml
security.gentoo.org / glsa/glsa-200903-38.xml
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10915
redhat.com / archives/fedora-package-announce/2007-December/msg00497.html
redhat.com / archives/fedora-package-announce/2007-December/msg00507.html
debian.org / security/2008/dsa-1482
Patch
kb.cert.org / vuls/id/232881
US Government Resource
mandriva.com / security/advisories
redhat.com / support/errata/RHSA-2007-1130.html
Patch
securityfocus.com / bid/26687
Patch
securitytracker.com / id
squid-cache.org / Advisories/SQUID-2007_2.txt
PatchVendor Advisory
squid-cache.org / Versions/v2/2.6/changesets/11780.patch
ExploitVendor Advisory
ubuntu.com / usn/usn-565-1
vupen.com / english/advisories/2007/4066
Vendor Advisory