CVE-2022-27636

Session-information disclosure via Edge Client logging

Published May 5, 2022 · Updated Sep 17, 2024

Sensitive-data logging in F5 BIG-IP Edge Client for Windows with affected APM releases allows local users to read session information. When a VPN is launched, Edge Client writes sensitive APM session-related information into a local log instead of excluding it. Access requires a local low-privileged account on the Windows endpoint, and the documented consequence is disclosure of session-related data.

CVSS severity5.5
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive-data logging in F5 BIG-IP Edge Client for Windows with affected APM releases allows local users to read session information. When a VPN is launched, Edge Client writes sensitive APM session-related information into a local log instead of excluding it. Access requires a local low-privileged account on the Windows endpoint, and the documented consequence is disclosure of session-related data.

The record

CVE
CVE-2022-27636
Published
May 5, 2022
Updated
Sep 17, 2024
Vendor
F5 Networks
Product
BIG-IP Access Policy Manager
Classifications
CWE-532, T1654
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 5, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=11.6.x
  2. Affected versionversion=12.1.x
  3. Affected versionversion=13.1.x <13.1.5
  4. Affected versionversion=14.1.x <14.1.4.6
  5. Affected versionversion=15.1.x <15.1.5.1
  6. Affected versionversion=16.1.x <16.1.2.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

F5 Networks · BIG-IP Access Policy Managerversion=11.6.x; version=12.1.x; version=13.1.x <13.1.5; version=14.1.x <14.1.4.6; version=15.1.x <15.1.5.1; version=16.1.x <16.1.2.2
F5 Networks · BIG-IP APM Clientsversion=7.x <7.2.1.5

Published CVSS scores

2.1NISTAV:L/AC:L/Au:N/C:P/I:N/A:N
5.5NISTCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
T1654Log Enumeration

Public exploit references

No public exploit references are available in this record.

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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