CVE-2016-9212: n/a Cisco Web Security Appliance vulnerability |…

CVE-2016-9212: A vulnerability in the Decrypt for End-User Notification configuration parameter of Cisco AsyncOS Software...

A vulnerability in the Decrypt for End-User Notification configuration parameter of Cisco AsyncOS Software for Cisco Web Security Appliances could allow an unauthenticated, remote attacker to connect to a secure website over Secure Sockets Layer (SSL) or Transport Layer Security (TLS), even if the WSA is configured to block connections to the website. Affected Products: This vulnerability affects Cisco Web Security Appliances if the HTTPS decryption options are enabled and configured for the device to block connections to certain websites. More Information: CSCvb49012. Known Affected Releases: 9.0.1-162 9.1.1-074.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 02:42 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2016-9212 is a Cisco Web Security Appliance policy-bypass flaw. If HTTPS decryption is enabled and the appliance is configured to block certain websites, an unauthenticated remote attacker could still connect to a blocked SSL/TLS site. The provided sources do not indicate device takeover or data theft. Organizations using Cisco Web Security Appliances for HTTPS decryption and web access control are the likely exposed group. Appliances not using HTTPS decryption or not blocking websites under that configuration are not identified as affected in the provided bundle. Handle as a control-bypass issue, not a confirmed system-compromise issue. Priority is higher where Cisco WSA is relied on to enforce regulated web access, prevent risky destinations, or support audit obligations. Mitigation focus: Check Cisco advisory cisco-sa-20161207-wsa1 for fixed releases and vendor workarounds.; Identify WSA appliances running AsyncOS 9.0.1-162 or 9.1.1-074.; Review whether HTTPS decryption and blocked-site policies are enabled..

Prepared: Jun 13, 2026, 13:16 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Dec 14, 2016, 00:37 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161207-wsa1CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/aCisco Web Security ApplianceCisco Web Security ApplianceListed

Weakness

CWE details

No CWE listed

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