Is CVE-2016-7970 in the CISA KEV catalog?

No. CVE-2016-7970 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-7970?

CVE-2016-7970 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2016-7970?

CVE-2016-7970 has an EPSS score of 4.75% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-7970?

Upgrade libass on debian 11 to 0.13.4-1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2016-7970

HIGHEPSS 91th pctl

7.5

CVSS v3

NVD

Description

Buffer overflow in the calc_coeff function in libass/ass_blur.c in libass before 0.13.4 allows remote attackers to cause a denial of service via unspecified vectors.

CWE-119Buffer Overflow

How to fix

Remediation Available

libassDebian

Fixed in:0.13.4-1CVE-2016-7970

libassUbuntu

Fixed in:0.10.1-3ubuntu1+esm1USN-4797-1

Fixed in:0.13.1-1ubuntu0.1~esm2USN-4797-1

libass4Ubuntu

Fixed in:0.10.1-3ubuntu1+esm1USN-4797-1

libass5Ubuntu

Fixed in:0.13.1-1ubuntu0.1~esm2USN-4797-1

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

Exploit Intelligence

4.75%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Patch5

Third-Party Advisory1

securityfocus.com

Other references3

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 2026-05-13.