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Vulnerability record · CVE-2021-45487 · published 25 December 2021

CVE-2021-45487: Netbsd vulnerability

Netbsd · Netbsd

In NetBSD through 9.2, the IPv4 ID generation algorithm does not use appropriate cryptographic measures.

7.5 CVSS 3.1 High EPSS 0.96% · top 39.8% CWE-330 · CWE-330
7.5CVSS 3.1 base score, v2 5.0
0.96%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

In NetBSD through 9.2, the IPv4 ID generation algorithm does not use appropriate cryptographic measures.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2021-001.txt.asc Vendor Advisory
https://arxiv.org/pdf/2112.09604.pdf Third Party Advisory
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2021-001.txt.asc Vendor Advisory
https://arxiv.org/pdf/2112.09604.pdf Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-45487), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.