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CVE-2021-44038: An issue was discovered in Quagga through 1.2.4

46
This month
HIGH 7.8UPGRADE

CVE-2021-44038 is a high-severity flaw (CVSS 7.8) affecting quagga. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in Quagga through 1.2.4. Unsafe chown/chmod operations in the suggested spec file allow users (with control of the non-root-owned directory /etc/quagga) to escalate their privileges to root upon package installation or update.

Why this priority

  • High severity
  • Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score7.8 (High)
Attack vectorLocal
Attack complexityLow
Privileges neededLow
User interactionNone
EPSS exploit chance0.8% (top 44%)
CISA exploited listNo
WeaknessCWE-59
Published2021-11-19
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: quagga

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

Am I affected?

Timeline

quagga quagga UPGRADE
Affected: <= 1.2.4
Fixed in: newer than 1.2.4
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy quagga || rpm -q quagga || quagga --version
2. UPGRADE to newer than 1.2.4 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade quagga
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade quagga
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
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-2021-44038?

quagga: upgrade to newer than 1.2.4. Exact commands for each OS are on this page.

Is CVE-2021-44038 being exploited?

CVE-2021-44038 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-2021-44038 affect?

CVE-2021-44038 affects quagga. Severity is high (CVSS 7.8). An issue was discovered in Quagga through 1.2.4. Unsafe chown/chmod operations in the suggested spec file allow users (with control of the non-root-owned directory /etc/quagga) to escalate their privileges to root upon package installation

How urgent is CVE-2021-44038?

Priority 46/100. High severity; Public exploit reference

References

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