CVE-2022-20759Public exploitNetwork attack vector

Authenticated privilege escalation via tunnel-group omission

Published May 3, 2022 · Updated Nov 6, 2024

Privilege escalation in Cisco ASA Software allows remote authenticated users to obtain level 15 access through the web services interface. Omitting tunnel-group data from an ASDM-style HTTPS login makes the authentication fallback accept any valid linked-domain account without checking ASA administrative authorization. HTTPS Management Access and either IKEv2 Client Services or WebVPN must be enabled, and the source address must pass the management ACL; the resulting session can administer the device and invoke its command API.

CVSS severity8.8
High
EPSS probability28.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in Cisco ASA Software allows remote authenticated users to obtain level 15 access through the web services interface. Omitting tunnel-group data from an ASDM-style HTTPS login makes the authentication fallback accept any valid linked-domain account without checking ASA administrative authorization. HTTPS Management Access and either IKEv2 Client Services or WebVPN must be enabled, and the source address must pass the management ACL; the resulting session can administer the device and invoke its command API.

The record

CVE
CVE-2022-20759
Published
May 3, 2022
Updated
Nov 6, 2024
Vendor
ClamAV
Product
Cisco Adaptive Security Appliance (ASA) Software
Classifications
CWE-269, CWE-266, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 3, 2022CVE publishedPublication date reported by the CVE source.
  2. Nov 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ClamAV · Cisco Adaptive Security Appliance (ASA) Softwareversion=n/a

Published CVSS scores

8.8Cisco Systems, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8NISTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.5NISTAV:N/AC:M/Au:S/C:C/I:C/A:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-269Improper Privilege Management
CWE-266Incorrect Privilege Assignment
T1068Exploitation for Privilege Escalation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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