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CVE-2009-2953

24
FAUCET Score

CVE-2009-2953 is a denial-of-service vulnerability affecting Mozilla Firefox versions 3.0.6 through 3.0.13 and 3.5.x. It allows remote attackers to consume excessive CPU resources by providing a long string value for the JavaScript location.hash property. This vulnerability has a CVSS score of 5.0, indicating a medium severity, with a network attack vector, low attack complexity, and potential for partial availability impact. While there is an ExploitDB entry (EDB-7554) detailing a remote crash, there is no evidence of active exploitation, Metasploit or Nuclei modules, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
3.0.6CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.0.6:*:*:*:*:*:*:*
3.0.7CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.0.7:*:*:*:*:*:*:*
3.0.8CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.0.8:*:*:*:*:*:*:*
3.0.9CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.0.9:*:*:*:*:*:*:*
3.0.10CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.0.10:*:*:*:*:*:*:*

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
4.63%
Probability of exploitation in next 30 days
EPSS Percentile
90.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
ExploitDB: EDB-7554 · Dec 23, 2008
This CVE's current EPSS score of 0.0462 is in the 87th percentile among its peer group of 23,725 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

Vendor Advisories (1)

redhatCVE-2009-2953Moderate

firefox: CPU consumption via malicious javascript

Aug 21, 2009

References

websecurity.com.ua / 3424
securityfocus.com / archive/1/506006/100/0/threaded