7.5

CVE-2021-29628: freebsd Incorrect Authorization

CVSS: 7.5v3.1HighModified
Published 28-05-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-29628 is a high (CVSS 7.5) Incorrect Authorization vulnerability in freebsd. EPSS estimates a 1.25% chance of exploitation in the next 30 days, higher than 69.1% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.25%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 28-05-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

In FreeBSD 13.0-STABLE before n245764-876ffe28796c, 12.2-STABLE before r369857, 13.0-RELEASE before p1, and 12.2-RELEASE before p7, a system call triggering a fault could cause SMAP protections to be disabled for the duration of the system call. This weakness could be combined with other kernel bugs to craft an exploit.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.25%

Chance of exploitation in the next 30 days

Percentile

69%

Versus all other CVEs

30-day change

0.00 pp

From 1.25% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.25%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (security.freebsd.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Freebsd1 product
  • freebsdEOL12.2 | 12.2:beta1-p1 | 12.2:p1 | 12.2:p2 | 12.2:p3 | 12.2:p4 | 12.2:p5 | 12.2:p6 | 13.0 | 13.0:beta3-p1 | 13.0:rc3 | 13.0:rc4 | 13.0:rc5-p1

1 vendor · 1 product

References

2 links