Is CVE-2015-8931 in the CISA KEV catalog?

No. CVE-2015-8931 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-8931?

CVE-2015-8931 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2015-8931?

CVE-2015-8931 has an EPSS score of 2.12% (80th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2015-8931?

Upgrade libarchive on debian 11 to 3.2.0-2 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2015-8931

HIGHEPSS 80th pctl

7.8

CVSS v3

NVD

Description

Multiple integer overflows in the (1) get_time_t_max and (2) get_time_t_min functions in archive_read_support_format_mtree.c in libarchive before 3.2.0 allow remote attackers to have unspecified impact via a crafted mtree file, which triggers undefined behavior.

CWE-190Integer Overflow

How to fix

Remediation Available

libarchiveDebian

Fixed in:3.2.0-2CVE-2015-8931

libarchiveUbuntu

Fixed in:3.1.2-7ubuntu2.3USN-3033-1

Fixed in:3.1.2-11ubuntu0.16.04.2USN-3033-1

libarchive13Ubuntu

Fixed in:3.1.2-7ubuntu2.3USN-3033-1

Fixed in:3.1.2-11ubuntu0.16.04.2USN-3033-1

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 VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

2.12%probability of exploitation in 30 days

80thpercentile

Elevated risk: more likely to be exploited than 80% of all known CVEs.

References

Exploit1

github.com

Third-Party Advisory6

Other references5

Related Vulnerabilities

Other CWE-190 (Integer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix
CVE-2019-11477	High	7.5	99%	-	Fix
CVE-2023-44443	High	7.8	94%	-	Fix
CVE-2014-0569	High	9.3	90%	-	-
CVE-2017-3599	High	7.5	90%	-	Fix
CVE-2023-21716	Critical	9.8	82%	-	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 2026-05-06.