What’s Vulnerable › Vulnerabilities

CVE-2021-45489

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-12-25 · updated 2026-06-17
• Weakness: CWE-338

Description

In NetBSD through 9.2, the IPv6 Flow Label generation algorithm employs a weak cryptographic PRNG.

Affected products

• Netbsd: through 9.2

References

• http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2021-001.txt.asc
• https://arxiv.org/pdf/2112.09604.pdf
• http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2021-001.txt.asc
• https://arxiv.org/pdf/2112.09604.pdf

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