CVE-2020-5897Network attack vector

Unspecified impact via ActiveX use-after-free

Published May 12, 2020 · Updated Aug 4, 2024

Use-after-free in the Windows ActiveX component of F5 Networks BIG-IP Edge Client 7.1.5 through 7.1.9 allows attackers to cause unspecified impact. F5 has not published the affected method, object-lifetime error, or input that leads the component to access freed memory. Exploitation requires user interaction, and the published record does not establish a more specific consequence.

CVSS severity8.8
High
EPSS probability1.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Windows ActiveX component of F5 Networks BIG-IP Edge Client 7.1.5 through 7.1.9 allows attackers to cause unspecified impact. F5 has not published the affected method, object-lifetime error, or input that leads the component to access freed memory. Exploitation requires user interaction, and the published record does not establish a more specific consequence.

The record

CVE
CVE-2020-5897
Published
May 12, 2020
Updated
Aug 4, 2024
Vendor
F5 Networks
Product
BIG-IP Edge Client
Classifications
CWE-416
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 12, 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=7.1.5-7.1.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

F5 Networks · BIG-IP Edge Clientversion=7.1.5-7.1.9

Published CVSS scores

6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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