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Vulnerabilities

Vulnerability · CVE-2016-6255

debian debian_linux Improper Access Control

Published Jun 13, 2019 · catalog updated Jun 13, 2019 · debian debian_linux Improper Access

Patch now

CVE-2016-6255 is in the CISA known-exploited catalog. Confirm debian debian_linux Improper Access against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
26.62%
Remediation
Remediation guidance
Affected products
vendor debian debian_linux

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor debian debian_linuxversion unspecified

How to fix CVE-2016-6255

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2016-6255 is in the CISA known-exploited catalog. Confirm debian debian_linux Improper Access against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 26.62%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Debian security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 13, 2019 · VulnCheck KEV

    Detected

    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.

  2. Jun 13, 2019 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2016-6255

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2016-6255

    30-day exploitation probability 26.6%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-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.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.