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Fencer Vulns
high 7.5

CVE-2016-6255 in the critical feed json

Portable UPnP SDK (aka libupnp) before 1.6.21 allows remote attackers to write to arbitrary files in the webroot via a POST request without…

published 2017-03-07 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-7185

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
27.0%
EPSS 27.0% chance of exploitation in 30 days, percentile 98%
public exploits
1
Exploit-DB

Summary

Portable UPnP SDK (aka libupnp) before 1.6.21 allows remote attackers to write to arbitrary files in the webroot via a POST request without a registered handler.

Patch / fix

  • libupnp Ubuntu 14.04 LTS 1:1.6.17-1.2+deb7u1build0.14.04.1
  • libupnp Ubuntu Pro 16.04 LTS 1:1.6.19+git20160116-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2016-6255

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-6255 updated cvss 4.3

libupnp: Unhandled POSTs can write to the filesystem by default

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. First public exploit (EDB-40589)
  2. Published

Exploit prediction

27.02% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-40589 MiCasaVerde VeraLite - Remote Code Execution remote, 2016-10-20

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:P/A:N

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.