CVE-2020-5892

Session ID disclosure from client process memory

Published Apr 30, 2020 · Updated Aug 4, 2024

Information disclosure in F5 BIG-IP Edge Client 7.1.5 through 7.1.8 allows local users to obtain the full session ID from process memory. Affected Windows client components expose the complete identifier in their process memory, but F5 has not disclosed the faulty memory-handling operation. Exploitation requires high privileges on the client machine and reveals the full identifier associated with a client VPN session.

CVSS severity6.7
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in F5 BIG-IP Edge Client 7.1.5 through 7.1.8 allows local users to obtain the full session ID from process memory. Affected Windows client components expose the complete identifier in their process memory, but F5 has not disclosed the faulty memory-handling operation. Exploitation requires high privileges on the client machine and reveals the full identifier associated with a client VPN session.

The record

CVE
CVE-2020-5892
Published
Apr 30, 2020
Updated
Aug 4, 2024
Vendor
F5 Networks
Product
BIG-IP Edge Client
Classifications
T1528
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Apr 30, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=7.1.5-7.1.8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

F5 Networks · BIG-IP Edge Clientversion=7.1.5-7.1.8

Published CVSS scores

4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
6.7NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1528Steal Application Access Token

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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