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CVE-2006-5550

22
FAUCET Score

CVE-2006-5550 describes a local denial-of-service vulnerability affecting the kernel in FreeBSD 6.1 and OpenBSD 4.0. An attacker can exploit this by sending specific ioctl requests to /dev/crypto, leading to system unavailability. With a CVSS score of 4.9 (AV:L/AC:L/Au:N/C:N/I:N/A:C), this vulnerability requires local access and has a low attack complexity, but can result in a complete loss of availability. While there is no evidence of active exploitation, a proof-of-concept exploit exists on ExploitDB, and there is minimal community discussion or media coverage surrounding this older CVE.

Impacted Technologies

VendorProductVersion(s)CPE
6.1CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:6.1:release:*:*:*:*:*:*
6.1CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:6.1:release_p10:*:*:*:*:*:*
6.1CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:6.1:stable:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:openbsd:openbsd:4.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.9MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.98%
Probability of exploitation in next 30 days
EPSS Percentile
58.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
ExploitDB: EDB-2639 · Oct 24, 2006
This CVE's current EPSS score of 0.0098 is in the 90th percentile among its peer group of 3,052 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

Remediation records are not available for this CVE.

References

elegerov.blogspot.com / 2006/10/here-is-lame-proof-of-concept-code-for.html
Exploit
secunia.com / advisories/22543
Vendor Advisory
securityfocus.com / bid/20713
Exploit