CVE-2020-7457

mediumpriority · attend · 54EPSS 0.331 · 98 %ileexploit · weaponizedEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · weaponized

Likely / severe?

33.1% (98th) EPSS

CVSS 6.8 · medium

Is it mine?

4 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-23

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.

cvss

Technical severity, 0–10. One row per scoring source.

8.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–8.1

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 6.4

v3.18.1highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.2 · impact 5.9

v3.17.9highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Fsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-362USprimaryCWE-416USprimaryCWE-662USprimary

exploits (1)

Public proof-of-concept and weaponised exploit code.

exploit/freebsd/local/ip6_setpktopt_uaf_priv_escFreeBSD ip6_setpktopt Use-After-Free Privilege Escalationweaponized · metasploit

affected products (4)

Products and version ranges known to be affected.

n/a FreeBSD≤ FreeBSD 12.1-RELEASE before p7, 11.4-RELEASE before p1, 11.3-RELEASE before p11enisa_euvdEU
freebsd freebsd= 11.3nvdUScpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*
freebsd freebsd= 11.4nvdUScpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*
freebsd freebsd= 12.1nvdUScpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2020-07-09modified 2026-06-17

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+15709 more

references (13)

External citations — patches, advisories, analysis.

scry

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