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CVE-2007-3946

22
FAUCET Score

CVE-2007-3946 describes a denial-of-service vulnerability in lighttpd versions prior to 1.4.16, specifically within the mod_auth module. Attackers can trigger a daemon crash through various unspecified vectors, including memory leaks, improper handling of md5-sess without a cnonce, issues with base64 encoded strings, and trailing whitespace in the Auth-Digest header. The vulnerability has a CVSS score of 6.4, indicating a medium severity with low attack complexity, requiring no authentication, and potentially leading to partial confidentiality and availability impacts. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.4.15CPE matchmatch criteria
cpe:2.3:a:lighttpd:lighttpd:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.4MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
4.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.42%
Probability of exploitation in next 30 days
EPSS Percentile
87.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0342 is in the 83rd 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

Remediation records are not available for this CVE.

References

osvdb.org / 38314
osvdb.org / 38315
osvdb.org / 38316
osvdb.org / 38317
secunia.com / advisories/26130
Patch
secunia.com / advisories/26158
Vendor Advisory
secunia.com / advisories/26505
secunia.com / advisories/26593
security.gentoo.org / glsa/glsa-200708-11.xml
issues.rpath.com / browse/RPL-1550
issues.rpath.com / browse/RPL-1554
trac.lighttpd.net / trac/browser/branches/lighttpd-1.4.x/NEWS
trac.lighttpd.net / trac/changeset/1875
debian.org / security/2007/dsa-1362
novell.com / linux/security/advisories/2007_15_sr.html
securityfocus.com / archive/1/474131/100/0/threaded
securityfocus.com / bid/24967
vupen.com / english/advisories/2007/2585