Vulnerability record · CVE-2020-7457 · published 9 July 2020

CVE-2020-7457: Freebsd race condition vulnerability

Freebsd · Freebsd

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.

8.1 CVSS 3.1 High EPSS 33% · top 1.7% CWE-362 · Race conditionCWE-416 · Use after free

8.1CVSS 3.1 base score, v2 6.8

33%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

6References, 2 tagged exploit

17 Jun 2026Last modified by NVD

Description

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

Affected products

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

Freebsd Freebsd

References

Link	Tags
http://packetstormsecurity.com/files/158695/FreeBSD-ip6_setpktopt-Use-After-Free-Privilege-Escalation.html	ExploitThird Party AdvisoryVDB Entry
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:20.ipv6.asc	PatchVendor 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.html	ExploitThird Party AdvisoryVDB Entry
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:20.ipv6.asc	PatchVendor Advisory
https://security.netapp.com/advisory/ntap-20200724-0002/	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-2020-7457), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.