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CVE-2007-0451

16
FAUCET Score

CVE-2007-0451 describes a denial-of-service vulnerability in Apache SpamAssassin versions prior to 3.1.8. Remote attackers can exploit this by sending malformed HTML containing excessively long URLs, leading to significant memory consumption and system instability. This vulnerability has a CVSS score of 4.3, indicating a medium attack complexity and a partial availability impact, with no confidentiality or integrity impact. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.1.7CPE matchmatch criteria
cpe:2.3:a:apache:spamassassin:*:*:*:*:*:*:*:*
3.0.1CPE matchmatch criteria
cpe:2.3:a:apache:spamassassin:3.0.1:*:*:*:*:*:*:*
3.0.2CPE matchmatch criteria
cpe:2.3:a:apache:spamassassin:3.0.2:*:*:*:*:*:*:*
3.0.3CPE matchmatch criteria
cpe:2.3:a:apache:spamassassin:3.0.3:*:*:*:*:*:*:*
3.0.4CPE matchmatch criteria
cpe:2.3:a:apache:spamassassin:3.0.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
6.66%
Probability of exploitation in next 30 days
EPSS Percentile
93.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0666 is in the 92nd percentile among its peer group of 19,956 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, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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 (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: spamassassin-0:3.1.8-2.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: spamassassin-0:3.1.8-2.el5
View patch

Vendor Advisories (1)

redhatCVE-2007-0451Important

security flaw

Feb 13, 2007

References

fedoranews.org / cms/node/2657
Patch
fedoranews.org / cms/node/2659
Patch
osvdb.org / 33207
rhn.redhat.com / errata/RHSA-2007-0074.html
secunia.com / advisories/24197
Vendor Advisory
secunia.com / advisories/24200
Vendor Advisory
secunia.com / advisories/24250
Vendor Advisory
secunia.com / advisories/24256
Vendor Advisory
secunia.com / advisories/24265
Vendor Advisory
secunia.com / advisories/24307
Vendor Advisory
secunia.com / advisories/24889
Vendor Advisory
security.gentoo.org / glsa/glsa-200703-02.xml
exchange.xforce.ibmcloud.com / vulnerabilities/32536
issues.rpath.com / browse/RPL-1073
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10018
spamassassin.apache.org / advisories/cve-2007-0451.txt
svn.apache.org / repos/asf/spamassassin/branches/3.1/build/announcements/3.1.8.txt
mandriva.com / security/advisories
novell.com / linux/security/advisories/2007_6_sr.html
redhat.com / support/errata/RHSA-2007-0075.html
securityfocus.com / bid/22584
Patch
securitytracker.com / id
vupen.com / english/advisories/2007/0628
Vendor Advisory