Is CVE-2016-1621 in the CISA KEV catalog?

No. CVE-2016-1621 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-1621?

CVE-2016-1621 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2016-1621?

CVE-2016-1621 has an EPSS score of 5.90% (92th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-1621?

Upgrade libvpx on debian 11 to 1.6.1-1 or later.

CVE & CISA-KEV Catalog

CVE-2016-1621

CRITICALEPSS 92th pctl

9.8

CVSS v3

NVD

Description

libvpx in mediaserver in Android 4.x before 4.4.4, 5.x before 5.1.1 LMY49H, and 6.0 before 2016-03-01 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted media file, related to libwebm/mkvparser.cpp and other files, aka internal bug 23452792.

CWE-119Buffer Overflow

How to fix

Remediation Available

libvpxDebian

Fixed in:1.6.1-1CVE-2016-1621

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

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

5.90%probability of exploitation in 30 days

92ndpercentile

High risk: more likely to be exploited than 92% of all known CVEs.

References

Other references7

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

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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 2026-05-06.