HOMEVULNERABILITIESCVE-2021-22992
CRITICAL

CVE-2021-22992

CWE-120Published: March 31, 2021· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, 12.1.x before 12.1.5.3, and 11.6.x before 11.6.5.3, a malicious HTTP response to an Advanced WAF/BIG-IP ASM virtual server with Login Page configured in its policy may trigger a buffer overflow, resulting in a DoS attack. In certain situations, it may allow remote code execution (RCE), leading to complete system compromise. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

NVD Source

Technical Analysis

CVE-2021-22992 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

f514 product(s)
big-ip access policy managerbig-ip advanced firewall managerbig-ip advanced web application firewallbig-ip analyticsbig-ip application acceleration managerbig-ip application security managerbig-ip ddos hybrid defenderbig-ip domain name systembig-ip fraud protection servicebig-ip global traffic managerbig-ip link controllerbig-ip local traffic manager+2
Source: NVD CPE · 14 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://support.f5.com/csp/article/K52510511
ADVISORYhttps://support.f5.com/csp/article/K52510511

All References (2)

→
https://support.f5.com/csp/article/K52510511Vendor Advisory
→
https://support.f5.com/csp/article/K52510511Vendor Advisory

Quick Facts

CVE IDCVE-2021-22992
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-120
CISA KEVNo
Affected1 vendor(s)
PublishedMar 31, 2021

Related CVEs (CWE-120)

CVE-2025-9962
10.0
CVE-1999-0385
10.0
CVE-2021-33975
10.0
CVE-2021-33972
10.0
CVE-2007-1770
10.0
CVE-2022-22570
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-22992 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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