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CVE-2000-0440

23
FAUCET Score

CVE-2000-0440 describes a denial-of-service vulnerability affecting NetBSD 1.4.2 and earlier, as well as certain versions of FreeBSD. Remote attackers can exploit this by sending a specially crafted packet containing an unaligned IP timestamp option, causing the affected system to crash or become unresponsive. This vulnerability has a CVSS score of 5.0 (Medium), indicating a network-based attack with low complexity and potential for partial availability impact. While not actively exploited in the wild, public exploit code exists, and there is no significant community discussion or media coverage surrounding this older vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
3.4CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:3.4:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:4.0:*:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:5.0:*:*:*:*:*:*:*
1.4.1CPE matchmatch criteria
cpe:2.3:o:netbsd:netbsd:1.4.1:*:*:*:*:*:*:*
1.4.2CPE matchmatch criteria
cpe:2.3:o:netbsd:netbsd:1.4.2:*:*:*:*:*:*:*

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
3.24%
Probability of exploitation in next 30 days
EPSS Percentile
87.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-19896 · May 4, 2000
This CVE's current EPSS score of 0.0324 is in the 82nd percentile among its peer group of 23,703 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

ftp.netbsd.org / pub/NetBSD/misc/security/advisories/NetBSD-SA2000-002.txt.asc
archives.neohapsis.com / archives/bugtraq/2000-05/0088.html
securityfocus.com / bid/1173