Is CVE-2021-3968 in the CISA KEV catalog?

No. CVE-2021-3968 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-3968?

CVE-2021-3968 has a CVSS v3 base score of 8.0 (HIGH).

What is the EPSS score for CVE-2021-3968?

CVE-2021-3968 has an EPSS score of 2.08% (79th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-3968?

Upgrade vim on debian 12 to 2:8.2.3995-1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-3968

HIGHEPSS 79th pctl

8.0

CVSS v3

NVD

Description

vim is vulnerable to Heap-based Buffer Overflow

CWE-122Heap-based Buffer Overflow CWE-787Out-of-bounds Write

How to fix

Remediation Available

vimDebian

Fixed in:2:8.2.3995-1CVE-2021-3968

VimWindows application

Affected:8.2.3430 8.2.3610Fixed in:8.2.3610Bram Moolenaar et al.

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 RequiredLow

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

2.08%probability of exploitation in 30 days

79thpercentile

Elevated risk: more likely to be exploited than 79% of all known CVEs.

References

Patch2

Third-Party Advisory2

Other references2

Related Vulnerabilities

Other CWE-122 (Heap-based Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2024-26256	High	7.8	88%	-	Fix
CVE-2020-25687	Medium	5.9	87%	-	Fix
CVE-2009-3459	High	8.8	86%	KEV	Fix
CVE-2021-21017	High	8.8	86%	KEV	-
CVE-2020-25683	Medium	5.9	86%	-	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.