CVE-2016-8863

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-17. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 8%CVSS: 9.8Exploit: None knownExposed: 0

A fix is available — apply it.

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.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
52(Track)
EG Risk 52/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation8% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
8%
EPSS %ILE
95%
KEV
Not listed

Published

March 7, 2017

Last Modified

June 17, 2026

Advisory Details (5)

Auto-updated Sep 22, 2026
🔬 Proof of concept available. Patch available.
generic

Portable UPnP SDK / Bugs / #133 Heap Buffer Overflow in 1.6.x and 1.8.x

https://sourceforge.net/p/pupnp/bugs/133/
generic

libupnp: Multiple vulnerabilities (GLSA 201701-52) — Gentoo security

https://security.gentoo.org/glsa/201701-52
generic

CVE-2016-8863 - PSIRT.COM

http://www.securityfocus.com/bid/92849
generic Patch Available🟡 PoC Available

[R1] Debian MediaTomb (fork) Multiple Remote Vulnerabilities - Research Advisory | Tenable®

https://www.tenable.com/security/research/tra-2017-10
generic Patch Available

[SECURITY] [DSA 3736-1] libupnp security update

https://www.debian.org/security/2016/dsa-3736

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibupnp6-doc (1:1.6.19+git20160116-1ubuntu0.1~esm1) @ xenial2026-05-20ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(3 across 2 ecosystems)
Debian:7(2)
PackageVulnerable rangeFixed inDependents
libupnp1:1.6.17-1.2, 1:1.6.17-1.2+deb7u11:1.6.17-1.2+deb7u2—
libupnp41.8.0~svn20100507-1.21.8.0~svn20100507-1.2+deb7u1—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
libupnp1:1.6.19+git20141001-11:1.6.19+git20141001-1+deb8u1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 4× in last 7d / 21× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 155 total refreshes for this CVE.

  1. 2026-09-24 13:59 UTCEPSS rescore
  2. 2026-09-23 13:41 UTCEPSS rescore
  3. 2026-09-19 15:35 UTCEPSS rescore
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  1. 2026-08-17 13:42 UTCEPSS rescore
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  7. 2026-08-10 13:40 UTCOSV refresh
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  20. 2026-07-25 14:13 UTCEPSS rescore
  21. 2026-07-25 14:11 UTCOSV refresh
  22. 2026-07-24 14:13 UTCEPSS rescore
  23. 2026-07-23 14:15 UTCEPSS rescore
  24. 2026-07-23 01:24 UTCEG score recompute
  25. 2026-07-22 22:04 UTCEG score recompute
  26. 2026-07-22 14:04 UTCEPSS rescore
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  45. 2026-07-09 19:06 UTCEPSS rescore
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  47. 2026-07-08 08:57 UTCOSV refresh
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  69. 2026-06-19 20:36 UTCOSV refresh
  70. 2026-06-18 17:50 UTCEPSS rescore
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  74. 2026-06-16 17:50 UTCEPSS rescore
  75. 2026-06-15 17:45 UTCEPSS rescore

Related CVEs(same product + same vendor + same CWE)

Same product

2 shown

Debian:7:libupnp · Debian:8:libupnp

Same vendor

1 shown

ubuntu:USN-4794-1

Frequently asked(5)

What is CVE-2016-8863?
CVE-2016-8863 is a critical vulnerability published on March 7, 2017. Heap-based buffer overflow in the createurllist 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…
When was CVE-2016-8863 disclosed?
CVE-2016-8863 was first published in the National Vulnerability Database on March 7, 2017, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-8863 actively exploited?
CVE-2016-8863 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8% probability of exploitation in the next 30 days, which ranks it in the top 5.2% of all scored CVEs.
What is the CVSS score of CVE-2016-8863?
CVE-2016-8863 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2016-8863?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-8863, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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