Is CVE-2021-3480 in the CISA KEV catalog?

No. CVE-2021-3480 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-3480?

CVE-2021-3480 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-3480?

CVE-2021-3480 has an EPSS score of 1.70% (74th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-3480?

Upgrade slapi-nis on debian 11 to 0.56.5-2 or later.

CVE & CISA-KEV Catalog

CVE-2021-3480

HIGHEPSS 74th pctl

7.5

CVSS v3

NVD

Description

A flaw was found in slapi-nis in versions before 0.56.7. A NULL pointer dereference during the parsing of the Binding DN could allow an unauthenticated attacker to crash the 389-ds-base directory server. The highest threat from this vulnerability is to system availability.

CWE-476NULL Pointer Dereference

How to fix

Remediation Available

slapi-nisDebian

Fixed in:0.56.5-2CVE-2021-3480

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 VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

1.70%probability of exploitation in 30 days

74thpercentile

Elevated risk: more likely to be exploited than 74% of all known CVEs.

References

Patch1

bugzilla.redhat.com

Other references2

Related Vulnerabilities

Other CWE-476 (NULL Pointer Dereference) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-21758	High	7.5	92%	-	Fix
CVE-2023-21547	High	7.5	88%	-	Fix
CVE-2014-3470	Medium	4.3	86%	-	Fix
CVE-2021-44224	High	8.2	82%	-	Fix
CVE-2016-0742	High	7.5	82%	-	Fix
CVE-2009-1386	Medium	5.0	80%	-	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 2024-11-21.