[NEW] [medium] F5 BIG-IP and BIG-IP Next: Vulnerability allows Denial of Service
A remote, anonymous attacker can exploit a vulnerability in F5 BIG-IP and BIG-IP Next to perform a Denial of Service attack.
CSIRTS triage
- What
- A vulnerability allows a remote, anonymous attacker to perform a Denial of Service attack.
- Who is affected
- Deployments of F5 BIG-IP and BIG-IP Next.
- Urgency
- Remediation is urgent as this vulnerability can lead to service disruption.
- Action
- Update to the latest version of F5 BIG-IP.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2371
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-597620.46% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 38% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-59762 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
Recent advisories for F5 BIG-IP and
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- unknownexploitedVulnerability in F5 BIG-IP Access Policy Manager (March 31, 2026)cert-fr-alerte · 2026-03-31
- criticalexploitedCVE-2025-53521: F5 BIG-IP Stack-Based Buffer Overflow Vulnerabilitycisa-kev · 2026-03-27
- criticalexploitedCVE-2023-46748: F5 BIG-IP Configuration Utility SQL Injection Vulnerabilitycisa-kev · 2023-10-31
- criticalexploitedCVE-2023-46747: F5 BIG-IP Configuration Utility Authentication Bypass Vulnerabilitycisa-kev · 2023-10-31
- criticalexploitedCVE-2022-1388: F5 BIG-IP Missing Authentication Vulnerabilitycisa-kev · 2022-05-10
- criticalexploitedCVE-2021-22991: F5 BIG-IP Traffic Management Microkernel Buffer Overflowcisa-kev · 2022-01-18
More from CERT-Bund (BSI) Security Advisories
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow denial of service2026-07-31
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- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities2026-07-31
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow unspecified attack2026-07-31