CVE-2021-23016: F5 On BIG-IP APM vulnerability
This F5 advisory covers CVE-2021-23016. Related products: BIG-IP, APM.
- CVE-2021-23016
Key facts
- Vendor rating
- Medium, CVSS 5.3
- CISA KEV
- Not listed (catalogue checked )
- Versions named
- 15.1.x; 14.1.x; 13.1.x and 1 more below
- Fixed in
- 15.1.3, 14.1.4.1, 13.1.4
- Source published
- Source revised
- Listed by VulniPulse
- Record changed
Compiled by VulniPulse from the linked sources. How records are collected and checked.
Related products & platforms
Description
On BIG-IP APM versions 15.1.x before 15.1.3, 14.1.x before 14.1.4.1, 13.1.x before 13.1.4, and all versions of 16.0.x, 12.1.x, and 11.6.x, an attacker may be able to bypass APM's internal restrictions and retrieve static content that is hosted within APM by sending specifically crafted requests to an APM Virtual Server.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Text from the source record.
- 15.1.x
- 14.1.x
- 13.1.x
- all versions
Official advisory · high-confidence parse· fetched ·verify at source
How to fix CVE-2021-23016
Upgrade to a fixed release named by F5:
- 15.1.3
- 14.1.4.1
- 13.1.4
Support dates for the fixed release lines
- F5 BIG-IP 15.1: support ended
- F5 BIG-IP 14.1: support ended
- F5 BIG-IP 13.1: support ended
More F5 advisories
CVE-2025-54854Oct 15, 2025When a BIG-IP APM OAuth access profile (Resource Server or Resource Client) is configuredCVE-2025-53521Oct 15, 2025When a BIG-IP APM access policy is configured on a virtual server, specificCVE-2026-94127Sep 22, 2026When a BIG-IP APM access policy and an OAuth profile are configured on a virtual serverCVE-2026-66842Sep 2, 2026BIG-IP vulnerabilityCVE-2026-59762Jul 15, 2026BIG-IP: When an HTTP/2 profile is configured on a virtual server, undisclosed requestsCVE-2026-39458May 13, 2026When a BIG-IP is configured with DNS caching
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