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TI-2019-01439 Aliases CVE-2019-1816GHSA-846c-pcw3-c872

Cisco Web Security Appliance Privilege Escalation Vulnerability

Priority LOW 35CWE-20Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

A vulnerability in the log subscription subsystem of the Cisco Web Security Appliance (WSA) could allow an authenticated, local attacker to perform command injection and elevate privileges to root. The vulnerability is due to insufficient validation of user-supplied input on the web and command-line interface. An attacker could exploit this vulnerability by authenticating to the affected device and injecting scripting commands in the scope of the log subscription subsystem. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system and elevate privileges to root.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0064 50th percentileScored 2026-11-07
Fix Fixed Cisco Web Security Appliance (WSA) (Cisco): 10.1.4-017, 10.5.4-018, 11.5.2-020 +1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoCisco Web Security Appliance (WSA)before 10.1.4-017; before 10.5.4-018; before 11.5.2-020; before 11.7.0-40610.1.4-017, 10.5.4-018, 11.5.2-020, 11.7.0-406Patch availableCNA
  • Cisco Web Security Appliance (WSA) VendorCisco Affected before 10.1.4-017; before 10.5.4-018; before 11.5.2-020; before 11.7.0-406 Fixed in 10.1.4-017, 10.5.4-018, 11.5.2-020, 11.7.0-406 Patch available CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:cisco:web_security_appliance:10.5.2-072:*:*:*:*:*:*:*10.5.2-072VulnerableCisco
cpe:2.3:a:cisco:web_security_appliance:11.0.0-641:*:*:*:*:*:*:*11.0.0-641VulnerableCisco
cpe:2.3:a:cisco:web_security_appliance:11.5.0-fcs-614:*:*:*:*:*:*:*11.5.0-fcs-614VulnerableCisco
cpe:2.3:a:cisco:web_security_appliance:wsa10.5.0-fcs-000:*:*:*:*:*:*:*wsa10.5.0-fcs-000VulnerableCisco
  • cpe:2.3:a:cisco:web_security_appliance:10.5.2-072:*:*:*:*:*:*:* Versions 10.5.2-072 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:web_security_appliance:11.0.0-641:*:*:*:*:*:*:* Versions 11.0.0-641 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:web_security_appliance:11.5.0-fcs-614:*:*:*:*:*:*:* Versions 11.5.0-fcs-614 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:web_security_appliance:wsa10.5.0-fcs-000:*:*:*:*:*:*:* Versions wsa10.5.0-fcs-000 Vulnerable ·Cisco

Remediation

  • Fix · CNA Cisco Web Security Appliance (WSA) (Cisco) Fixed in 10.1.4-017, 10.5.4-018, 11.5.2-020, 11.7.0-406

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-1816
  2. 2026-10-03 Alias added: GHSA-846c-pcw3-c872
  3. 2026-10-23 EPSS moved to the 50th–90th percentile

References

Advisory 1

  • TI-2023-06741 Buffer overflow in Cisco Secure Web Appliance CVSS 3.1CRITICAL 9.8
  • TI-2018-00369 Uncontrolled resource consumption in Cisco AsyncOS Software for Cisco Web Security… CVSS 3.0HIGH 8.6
  • TI-2019-01508 Cisco Web Security Appliance HTTPS Certificate Denial of Service Vulnerability CVSS 3.1HIGH 8.6
  • TI-2018-00312 A vulnerability in traffic-monitoring functions in Cisco Web Security Appliance (WSA)… CVSS 3.0HIGH 7.5
  • TI-2021-01086 Cisco Web Security Appliance Privilege Escalation Vulnerability CVSS 3.1HIGH 8.8
  • TI-2019-11999 Cisco Web Security Appliance Unauthorized Device Reset Vulnerability CVSS 3.1HIGH 8.8
See all 64 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences