Is CVE-2020-13776 in the CISA KEV catalog?

No. CVE-2020-13776 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-13776?

CVE-2020-13776 has a CVSS v3 base score of 6.7 (MEDIUM).

What is the EPSS score for CVE-2020-13776?

CVE-2020-13776 has an EPSS score of 0.46% (37th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-13776?

Upgrade systemd on debian 11 to 246-2 or later.

CVE & CISA-KEV Catalog

CVE-2020-13776

MEDIUM

6.7

CVSS v3

NVD

Description

systemd through v245 mishandles numerical usernames such as ones composed of decimal digits or 0x followed by hex digits, as demonstrated by use of root privileges when privileges of the 0x0 user account were intended. NOTE: this issue exists because of an incomplete fix for CVE-2017-1000082.

CWE-269Improper Privilege Management

How to fix

Remediation Available

systemdDebian

Fixed in:246-2CVE-2020-13776

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityHigh

Privileges RequiredLow

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.46%probability of exploitation in 30 days

37thpercentile

Low risk: more likely to be exploited than 37% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory1

security.netapp.com

Other references1

lists.fedoraproject.org

Related Vulnerabilities

Other CWE-269 (Improper Privilege Management) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2017-12635	Critical	9.8	100%	-	Fix
CVE-2022-24637	Critical	9.8	99%	-	Fix
CVE-2017-5689	Critical	9.8	92%	KEV	Fix
CVE-2020-3243	Critical	9.8	88%	-	-
CVE-2024-21888	High	8.8	87%	-	-
CVE-2022-0441	Critical	9.8	85%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-06-09.