What is CVE-2021-34698?

CVE-2021-34698 is a high-severity vulnerability in Cisco Asyncos, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 8.6/10. Published 2021-10-06.

How severe is CVE-2021-34698?

High severity. CVSS v3 base score is 8.6 out of 10.

Vulnerability in Cisco Asyncos

CVE-2021-34698

A vulnerability in the proxy service of Cisco AsyncOS for Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to exhaust system memory and cause a denial of service (DoS) condition on an affected device. This…

EPSS: 0.014 (69.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

Affected products

Cisco Asyncos
Cisco Web Security Appliance (Wsa) — versions n/a
Cisco Web_security_appliance_s170
Cisco Web_security_appliance_s190
Cisco Web_security_appliance_s380
Cisco Web_security_appliance_s390
Cisco Web_security_appliance_s680
Cisco Web_security_appliance_s690
Cisco Web_security_appliance_s690x

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

References

psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2021-34698?: CVE-2021-34698 is a high-severity vulnerability in Cisco Asyncos, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 8.6/10. Published 2021-10-06.
How severe is CVE-2021-34698?: High severity. CVSS v3 base score is 8.6 out of 10.