CVE-2026-41957: CWE-502 Deserialization of Untrusted Data in F5 BIG-IP
An authenticated remote code execution vulnerability through undisclosed vectors exists in the BIG-IP and BIG-IQ Configuration utility. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-41957) involves deserialization of untrusted data in the F5 BIG-IP and BIG-IQ Configuration utility, which can lead to remote code execution by an authenticated attacker. The affected versions include 17.5.0, 17.1.0, and 16.1.0. The CVSS v3.1 score is 8.8, reflecting high impact on confidentiality, integrity, and availability. The vulnerability is confirmed published but lacks an official remediation level or patch information. The issue does not affect cloud services and no exploits have been observed in the wild to date.
Potential Impact
Successful exploitation allows an authenticated attacker to execute arbitrary code remotely on the affected BIG-IP or BIG-IQ systems, potentially leading to full system compromise. The vulnerability impacts confidentiality, integrity, and availability with high severity as indicated by the CVSS score of 8.8. Since the attack requires authentication, it limits exposure to users with valid credentials.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to the BIG-IP and BIG-IQ Configuration utilities to trusted administrators only and monitor for suspicious activity. Avoid using affected versions if possible and plan for upgrade once a patch or official mitigation is announced by F5.
CVE-2026-41957: CWE-502 Deserialization of Untrusted Data in F5 BIG-IP
Description
An authenticated remote code execution vulnerability through undisclosed vectors exists in the BIG-IP and BIG-IQ Configuration utility. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-41957) involves deserialization of untrusted data in the F5 BIG-IP and BIG-IQ Configuration utility, which can lead to remote code execution by an authenticated attacker. The affected versions include 17.5.0, 17.1.0, and 16.1.0. The CVSS v3.1 score is 8.8, reflecting high impact on confidentiality, integrity, and availability. The vulnerability is confirmed published but lacks an official remediation level or patch information. The issue does not affect cloud services and no exploits have been observed in the wild to date.
Potential Impact
Successful exploitation allows an authenticated attacker to execute arbitrary code remotely on the affected BIG-IP or BIG-IQ systems, potentially leading to full system compromise. The vulnerability impacts confidentiality, integrity, and availability with high severity as indicated by the CVSS score of 8.8. Since the attack requires authentication, it limits exposure to users with valid credentials.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to the BIG-IP and BIG-IQ Configuration utilities to trusted administrators only and monitor for suspicious activity. Avoid using affected versions if possible and plan for upgrade once a patch or official mitigation is announced by F5.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- f5
- Date Reserved
- 2026-04-30T23:02:47.661Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a049711cbff5d8610dff677
Added to database: 5/13/2026, 3:21:53 PM
Last enriched: 5/13/2026, 3:51:40 PM
Last updated: 5/14/2026, 6:35:42 AM
Views: 13
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