CVE-2020-7457

Name: CVE-2020-7457
Creator: NVD / NIST
Published: 2020-07-09T14:15:10.917+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 32.98%

Last modified Jun 17, 2026

CVE-2020-7457 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. In FreeBSD 12.1-STABLE before r359565, 12.1-RELEASE before p7, 11.4-STABLE before r362975, 11.4-RELEASE before p1, and 11.3-RELEASE before p11, missing synchronization in the IPV6_2292PKTOPTIONS socket option set handler contained a race condition allowing a malicious application to modify memory after being freed, possibly resulting in code execution.. EPSS estimates a 32.98% chance of exploitation in the next 30 days.

Description

In FreeBSD 12.1-STABLE before r359565, 12.1-RELEASE before p7, 11.4-STABLE before r362975, 11.4-RELEASE before p1, and 11.3-RELEASE before p11, missing synchronization in the IPV6_2292PKTOPTIONS socket option set handler contained a race condition allowing a malicious application to modify memory after being freed, possibly resulting in code execution.

Metrics

CVSS 3.1

8.1/10

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

EPSS Probability

32.98%

98.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Freebsd	Freebsd	11.3
Freebsd	Freebsd	11.4
Freebsd	Freebsd	12.1

References

http://packetstormsecurity.com/files/158695/FreeBSD-ip6_setpktopt-Use-After-Free-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:20.ipv6.ascPatch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20200724-0002/Third Party Advisory
http://packetstormsecurity.com/files/158695/FreeBSD-ip6_setpktopt-Use-After-Free-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:20.ipv6.ascPatch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20200724-0002/Third Party Advisory

Timeline

Published: Jul 9, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-7457?

How severe is CVE-2020-7457?

CVE-2020-7457 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 32.98% probability of exploitation in the next 30 days.

How do I fix CVE-2020-7457?

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-2020-7457?

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

Scan your code now

Source: NVD / NIST