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CVE-2016-6255

42
FAUCET Score

CVE-2016-6255 is a high-severity vulnerability in Portable UPnP SDK (libupnp) versions prior to 1.6.21, allowing remote attackers to write arbitrary files to the webroot. This unauthenticated flaw, with a CVSS score of 7.5, enables high integrity impact without requiring user interaction. While not observed in active exploitation or listed in CISA KEV, public exploit code exists (EDB-40589), and its EPSS score indicates a higher-than-average probability of exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
<= 1.6.20CPE matchmatch criteria
cpe:2.3:a:libupnp_project:libupnp:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
26.82%
Probability of exploitation in next 30 days
EPSS Percentile
97.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
ExploitDB: EDB-40589 · Oct 20, 2016
This CVE's current EPSS score of 0.2682 is in the 96th percentile among its peer group of 51,466 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

github_advisorypatch availablevia nvd_reference
View patch
beegovendor investigatingvia llm_extracted
lexmarkvendor investigatingvia llm_extracted
libreofficevendor investigatingvia llm_extracted
postgresqlvendor investigatingvia llm_extracted

Vendor Advisories (4)

beegollm-beego-5edcbbd68defa25eCRITICAL

[R1] Debian MediaTomb (fork) Multiple Remote Vulnerabilities

Mar 13, 2017
postgresqlllm-postgresql-b781023a47ce749dCRITICAL

[R1] Debian MediaTomb (fork) Multiple Remote Vulnerabilities

Mar 13, 2017
lexmarkllm-lexmark-fac052076c03cea6CRITICAL

[R1] Debian MediaTomb (fork) Multiple Remote Vulnerabilities

Mar 13, 2017
libreofficellm-libreoffice-2011f31b38c5d0e4CRITICAL

[R1] Debian MediaTomb (fork) Multiple Remote Vulnerabilities

Mar 13, 2017

References

github.com / mjg59/pupnp-code/commit/be0a01bdb83395d9f3a5ea09c1308a4f1a972cbd
Issue TrackingPatchThird Party Advisory
security.gentoo.org / glsa/201701-52
sourceforge.net / p/pupnp/code/ci/master/tree/ChangeLog
Release NotesThird Party Advisory
twitter.com / mjg59/status/755062278513319936
Third Party Advisory
exploit-db.com / exploits/40589
tenable.com / security/research/tra-2017-10
debian.org / security/2016/dsa-3736
Third Party Advisory
openwall.com / lists/oss-security/2016/07/18/13
Mailing ListPatchThird Party Advisory
openwall.com / lists/oss-security/2016/07/20/5
Mailing ListPatchThird Party Advisory
securityfocus.com / bid/92050
Third Party AdvisoryVDB Entry