CVE-2020-7469

Name: CVE-2020-7469
Creator: NVD / NIST
Published: 2021-06-04T12:15:07.45+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.22%

Last modified Jun 17, 2026

CVE-2020-7469 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. In FreeBSD 12.2-STABLE before r367402, 11.4-STABLE before r368202, 12.2-RELEASE before p1, 12.1-RELEASE before p11 and 11.4-RELEASE before p5 the handler for a routing option caches a pointer into the packet buffer holding the ICMPv6 message. However, when processing subsequent options the packet buffer may be freed, rendering the cached pointer invalid. EPSS estimates a 1.22% chance of exploitation in the next 30 days.

Description

In FreeBSD 12.2-STABLE before r367402, 11.4-STABLE before r368202, 12.2-RELEASE before p1, 12.1-RELEASE before p11 and 11.4-RELEASE before p5 the handler for a routing option caches a pointer into the packet buffer holding the ICMPv6 message. However, when processing subsequent options the packet buffer may be freed, rendering the cached pointer invalid. The network stack may later dereference the pointer, potentially triggering a use-after-free.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.22%

64.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Freebsd	Freebsd	11.4
Freebsd	Freebsd	12.1
Freebsd	Freebsd	12.2
Netapp	Clustered Data Ontap	All versions

References

https://security.FreeBSD.org/advisories/FreeBSD-SA-20:31.icmp6.ascVendor Advisory
https://security.netapp.com/advisory/ntap-20210720-0001/Third Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:31.icmp6.ascVendor Advisory
https://security.netapp.com/advisory/ntap-20210720-0001/Third Party Advisory

Timeline

Published: Jun 4, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-7469?

How severe is CVE-2020-7469?

CVE-2020-7469 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.22% probability of exploitation in the next 30 days.

How do I fix CVE-2020-7469?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-7469?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST