CVE-2020-25577

In FreeBSD 12.2-STABLE before r368250, 11.4-STABLE before r368253, 12.2-RELEASE before p1, 12.1-RELEASE before p11 and 11.4-RELEASE before p5 rtsold(8) does not verify that the RDNSS option does not extend past the end of the received packet before processing its contents. While the kernel currently ignores such malformed packets, it passes them to userspace programs. Any programs expecting the kernel to do validation may be vulnerable to an overflow.

• CWE-120

• https://security.FreeBSD.org/advisories/FreeBSD-SA-20:32.rtsold.ascVendor Advisory
• https://security.netapp.com/advisory/ntap-20210423-0001/Third Party Advisory
• https://security.FreeBSD.org/advisories/FreeBSD-SA-20:32.rtsold.ascVendor Advisory
• https://security.netapp.com/advisory/ntap-20210423-0001/Third Party Advisory

Published

Mar 29, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2020-25566In SapphireIMS 5.0, it is possible to take over an account b…9.8
• CVE-2020-2557Vulnerability in the Oracle Demantra Demand Management produ…4.7
• CVE-2020-25573An issue was discovered in the linked-hash-map crate before …9.8
• CVE-2020-25574An issue was discovered in the http crate before 0.1.20 for …7.5
• CVE-2020-25575An issue was discovered in the failure crate through 0.1.5 f…9.8
• CVE-2020-25576An issue was discovered in the rand_core crate before 0.4.2 …9.8
• CVE-2020-25578In FreeBSD 12.2-STABLE before r368969, 11.4-STABLE before r3…5.3
• CVE-2020-25579In FreeBSD 12.2-STABLE before r368969, 11.4-STABLE before r3…5.3
• CVE-2020-2558Vulnerability in the Oracle Solaris product of Oracle System…5.8
• CVE-2020-25580In FreeBSD 12.2-STABLE before r369346, 11.4-STABLE before r3…5.3
• CVE-2020-25581In FreeBSD 12.2-STABLE before r369312, 11.4-STABLE before r3…7.5
• CVE-2020-25582In FreeBSD 12.2-STABLE before r369334, 11.4-STABLE before r3…8.7