7.8

CVE-2021-45444: apple mac_os_x

CVSS: 7.8v3.1HighModified
AliasesALPINE-CVE-2021-45444MGASA-2022-0073RHSA-2022:2120
Published 13-02-2022Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2021-45444 is a high (CVSS 7.8) vulnerability in apple mac_os_x. EPSS estimates a 1.98% chance of exploitation in the next 30 days, higher than 80.3% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
1.98%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 5 · Related 5
OPENSUSE-SU-2022:0735-1SUSE-SU-2022:0732-1SUSE-SU-2022:0733-1SUSE-SU-2022:0735-1USN-5325-1

Timeline

  1. 13-02-2022
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

In zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

1.98%

Chance of exploitation in the next 30 days

Percentile

80%

Versus all other CVEs

30-day change

0.00 pp

From 1.98% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.98%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Redhat4 products
  • zsh< 0:5.5.1-9.el8
  • zsh-debuginfo< 0:5.5.1-9.el8
  • zsh-debugsource< 0:5.5.1-9.el8
  • zsh-html< 0:5.5.1-9.el8
Apple2 products
  • mac_os_x≥ 10.15, < 10.15.7 | 10.15.7:security_update_2020 | 10.15.7:security_update_2020-001 | 10.15.7:security_update_2020-005 | 10.15.7:security_update_2020-007 | 10.15.7:security_update_2021-001 | 10.15.7:security_update_2021-002 | 10.15.7:security_update_2021-003 | 10.15.7:security_update_2021-006 | 10.15.7:security_update_2021-007 | 10.15.7:security_update_2021-008 | 10.15.7:security_update_2022-001 | 10.15.7:security_update_2022-002 | 10.15.7:security_update_2022-003
  • macos≥ 11.0, < 11.6.6 | ≥ 12.0.0, < 12.4
Debian2 products
  • zsh< 5.7.1-1+deb10u1 | < 5.8-6+deb11u1 | < 5.3.1-4+deb9u5 | < 5.8.1-1
  • debian_linuxEOL9.0 | 10.0 | 11.0
Alpine1 product
  • zsh< 5.8.1-r0
Fedoraproject1 product
Mageia1 product
  • zsh< 5.8.1-1.mga8
Opensuse1 product
  • zsh&distro=openSUSE Tumbleweed< 5.8.1-1.1
Ubuntu1 product
  • zsh< 5.1.1-1ubuntu2.3+esm1 | < 5.4.2-3ubuntu3.2 | < 5.8-3ubuntu1.1 | All versions (No fix recorded)
Zsh1 product

9 vendors · 14 products

References

32 links
Show all 32 references