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High severity7.5NVD Advisory· Published May 3, 2019· Updated Jun 17, 2026

CVE-2019-1817

CVE-2019-1817

Description

A vulnerability in the web proxy functionality of Cisco AsyncOS Software for Cisco Web Security Appliance could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper validation of HTTP and HTTPS requests. An attacker could exploit this vulnerability by sending a malformed HTTP or HTTPS request to an affected device. An exploit could allow the attacker to cause a restart of the web proxy process, resulting in a temporary DoS condition.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

6
  • Cisco Systems, Inc./Web Security Appliance5 versions
    cpe:2.3:a:cisco:web_security_appliance:11.5.1-fcs-115:*:*:*:*:*:*:*+ 4 more
    • cpe:2.3:a:cisco:web_security_appliance:11.5.1-fcs-115:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:web_security_appliance:11.5.1-fcs-124:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:web_security_appliance:11.5.1-fcs-125:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:web_security_appliance:11.7.0-fcs-334:*:*:*:*:*:*:*
    • (no CPE)
  • Cisco Systems, Inc./Web Security Appliance \(wsa\)cpe-rescue
    Range: unspecified

Patches

Vulnerability mechanics

References

1

News mentions

0

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