Is CVE-2016-8863 in the CISA KEV catalog?

No. CVE-2016-8863 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-8863?

CVE-2016-8863 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2016-8863?

CVE-2016-8863 has an EPSS score of 8.49% (94th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-8863?

Upgrade libupnp on ubuntu 16.04 to 1:1.6.19+git20160116-1ubuntu0.1~esm1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2016-8863

CRITICALEPSS 94th pctl

9.8

CVSS v3

NVD

Description

Heap-based buffer overflow in the create_url_list function in gena/gena_device.c in Portable UPnP SDK (aka libupnp) before 1.6.21 allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a valid URI followed by an invalid one in the CALLBACK header of an SUBSCRIBE request.

CWE-119Buffer Overflow

How to fix

Remediation Available

libupnpUbuntu

Fixed in:1:1.6.19+git20160116-1ubuntu0.1~esm1USN-4794-1

libupnp6Ubuntu

Fixed in:1:1.6.19+git20160116-1ubuntu0.1~esm1USN-4794-1

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

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

8.49%probability of exploitation in 30 days

94thpercentile

High risk: more likely to be exploited than 94% of all known CVEs.

References

Third-Party Advisory3

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.