CVE-2016-6255
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 27.0%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
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.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 27.02% probability · 98th percentile
- Public exploits
- 1 in Exploit-DB · first 20 October 2016
- CISA KEV
- Not listed
- Weakness
- CWE-284
- Affected
- debian/debian linux · libupnp project/libupnp
- Source
- cve@mitre.org
EPSS moved from 23.4% on 21 September 2026 to 27.0% on 26 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://www.debian.org/security/2016/dsa-3736Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/07/18/13Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/07/20/5Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/92050Third Party Advisory, VDB Entry
- https://github.com/mjg59/pupnp-code/commit/be0a01bdb83395d9f3a5ea09c1308a4f1a972cbdIssue Tracking, Patch, Third Party Advisory
- https://security.gentoo.org/glsa/201701-52
- https://sourceforge.net/p/pupnp/code/ci/master/tree/ChangeLogRelease Notes, Third Party Advisory
- https://twitter.com/mjg59/status/755062278513319936Third Party Advisory
- https://www.exploit-db.com/exploits/40589/
- https://www.tenable.com/security/research/tra-2017-10
- http://www.debian.org/security/2016/dsa-3736Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/07/18/13Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/07/20/5Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/92050Third Party Advisory, VDB Entry
- https://github.com/mjg59/pupnp-code/commit/be0a01bdb83395d9f3a5ea09c1308a4f1a972cbdIssue Tracking, Patch, Third Party Advisory
- https://security.gentoo.org/glsa/201701-52
- https://sourceforge.net/p/pupnp/code/ci/master/tree/ChangeLogRelease Notes, Third Party Advisory
- https://twitter.com/mjg59/status/755062278513319936Third Party Advisory
- https://www.exploit-db.com/exploits/40589/
- https://www.tenable.com/security/research/tra-2017-10
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.