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CVE-2021-44038

25
FAUCET Score

CVE-2021-44038 is a privilege escalation vulnerability affecting Quagga through version 1.2.4, stemming from unsafe chown/chmod operations during package installation or updates. This allows a local, low-privileged attacker who controls the /etc/quagga directory to gain root privileges. Rated with a CVSS score of 7.8 (High), the attack requires local access but has low complexity and no user interaction. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.2.4CPE matchmatch criteria
cpe:2.3:a:quagga:quagga:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.76%
Probability of exploitation in next 30 days
EPSS Percentile
51.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0076 is in the 88th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

microsoftpatch availablevia msrc
Product: 19649-16823
microsoftpatch availablevia msrc
Product: cbl2 quagga on CBL Mariner 2.0

Vendor Advisories (2)

redhatCVE-2021-44038Low

quagga: unsafe chown/chmod operations may lead to privileges escalation

Nov 19, 2021
microsoft2021-Nov/CVE-2021-44038Important

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.

Nov 9, 2021

References

bugzilla.suse.com / show_bug.cgi
ExploitIssue TrackingThird Party Advisory
github.com / Quagga/quagga/releases
Release NotesThird Party Advisory