CVE-2021-32436: An out-of-bounds read in the function write_title() in subs.c of abcm2ps v8.14.11 allows remote attackers to c

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MEDIUM 6.5WATCHLISTDOWNGRADEMITIGATEMITIGATE

CVE-2021-32436 is a medium-severity flaw (CVSS 6.5) affecting abcm2ps, fedora, debian linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An out-of-bounds read in the function write_title() in subs.c of abcm2ps v8.14.11 allows remote attackers to cause a Denial of Service (DoS) via unspecified vectors.

Why this priority

Public exploit reference
On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Weakness	CWE-125
Published	2022-03-10
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: abcm2ps project · debian · fedoraproject

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

Am I affected?

Timeline

2022-03-10 17:42 UTCPublished CVE record published
2026-06-17 03:52 UTCUpdated Record last modified

abcm2ps project abcm2ps DOWNGRADE

Affected: 8.14.11

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.14.11

1. Check installed version

apt-cache policy abcm2ps || rpm -q abcm2ps || abcm2ps --version

2. No fixed release: DOWNGRADE to a release before 8.14.11 (Debian / Ubuntu)

apt-cache madison abcm2ps sudo apt install abcm2ps=<VERSION_BEFORE_8.14.11> sudo apt-mark hold abcm2ps

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list abcm2ps sudo dnf downgrade abcm2ps-<VERSION_BEFORE_8.14.11> sudo dnf versionlock add abcm2ps

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

fedoraproject fedora MITIGATE

Affected: 34 · 35 · 36

Fixed in: no fixed release known

Safe to downgrade to: a release before 34

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.

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.

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-2021-32436?

abcm2ps: downgrade or apply the listed mitigation; fedora: mitigate or apply the listed mitigation; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-32436 being exploited?

CVE-2021-32436 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-2021-32436 affect?

CVE-2021-32436 affects abcm2ps, fedora, debian linux. Severity is medium (CVSS 6.5). An out-of-bounds read in the function write_title() in subs.c of abcm2ps v8.14.11 allows remote attackers to cause a Denial of Service (DoS) via unspecified vectors.

How urgent is CVE-2021-32436?

Priority 52/100. Public exploit reference; On your watchlist

Software pages

Debian vulnerabilities

Related CVEs

CVE-2021-32435 MEDIUM 5.5 DOWNGRADE MITIGATE Stack-based buffer overflow in the function get_key in parse.c of abcm2ps v8.14.11 allows remote attackers to
CVE-2021-32434 MEDIUM 5.5 DOWNGRADE MITIGATE abcm2ps v8.14.11 was discovered to contain an out-of-bounds read in the function calculate_beam at draw.c.

References

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