CVE-2021-32610: In Archive_Tar before 1.4.14, symlinks can refer to targets outside of the extracted archive, a different vuln

Q: How do I fix CVE-2021-32610?

archive tar: upgrade to 1.4.14; debian linux: mitigate or apply the listed mitigation; fedora: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2021-32610 being exploited?

CVE-2021-32610 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-32610 affect?

CVE-2021-32610 affects archive tar, debian linux, fedora. Severity is high (CVSS 7.1). In Archive_Tar before 1.4.14, symlinks can refer to targets outside of the extracted archive, a different vulnerability than CVE-2020-36193.

Q: How urgent is CVE-2021-32610?

Priority 55/100. High severity; EPSS top 1%: very likely to be exploited; On your watchlist

This week

HIGH 7.1WATCHLISTUPGRADEMITIGATEMITIGATE

CVE-2021-32610 is a high-severity flaw (CVSS 7.1) affecting archive tar, debian linux, fedora. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In Archive_Tar before 1.4.14, symlinks can refer to targets outside of the extracted archive, a different vulnerability than CVE-2020-36193.

Why this priority

High severity
EPSS top 1%: very likely to be exploited
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.1 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	73.4% (top 1%)
CISA exploited list	No
Weakness	CWE-59
Published	2021-07-30
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: debian · fedoraproject · php

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-07-30 14:15 UTCPublished CVE record published
2026-06-17 03:53 UTCUpdated Record last modified

php archive tar UPGRADE

Affected: < 1.4.14

Fixed in: 1.4.14

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy archive-tar || rpm -q archive-tar || archive-tar --version

2. UPGRADE to 1.4.14 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade archive-tar

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade archive-tar

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

debian debian linux MITIGATE

Affected: 9.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 9.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

fedoraproject fedora MITIGATE

Affected: 33 · 34 · 35

Fixed in: no fixed release known

Safe to downgrade to: a release before 33

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-32610?

archive tar: upgrade to 1.4.14; debian linux: mitigate or apply the listed mitigation; fedora: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-32610 being exploited?

CVE-2021-32610 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-32610 affect?

CVE-2021-32610 affects archive tar, debian linux, fedora. Severity is high (CVSS 7.1). In Archive_Tar before 1.4.14, symlinks can refer to targets outside of the extracted archive, a different vulnerability than CVE-2020-36193.

How urgent is CVE-2021-32610?

Priority 55/100. High severity; EPSS top 1%: very likely to be exploited; On your watchlist

Software pages

PHP vulnerabilities · Debian vulnerabilities

Related CVEs

CVE-2020-36193 HIGH 7.5 EXPLOITED UPGRADE MITIGATE PEAR Archive_Tar Improper Link Resolution Vulnerability
CVE-2020-28949 HIGH 7.8 EXPLOITED UPGRADE MITIGATE PEAR Archive_Tar Deserialization of Untrusted Data Vulnerability
CVE-2020-28948 HIGH 7.8 UPGRADE MITIGATE Archive_Tar through 1.4.10 allows an unserialization attack because phar: is blocked but PHAR: is not blocked.

References

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