CVE-2025-54858
📛 CVE Title
BIG-IP Advanced WAF and ASM vulnerability
Description
When a BIG-IP Advanced WAF or BIG-IP ASM Security Policy is configured with a JSON content profile that has a malformed JSON schema, and the security policy is applied to a virtual server, undisclosed requests can cause the bd process to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- f5
- CVSS severity
- HIGH
- CVSS score
- 8.7 / 10
- CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N- Effective score
- 8.7 / 10 HIGH source: CNA overview
- CWE(s)
-
CWE-674 - Reserved
- 2025-10-04
- Published
- 2025-10-15 15:55 UTC
- Last updated
- 2026-02-26 17:57 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2025/54xxx/CVE-2025-54858.json
- Linked Threat
- CVE-2025-54858 — BIG-IP Advanced WAF and ASM vulnerability
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2025-10-15 14:15:50 UTC
- NVD last modified
- 2026-06-17 09:40:48 UTC
- NVD CVSS v3.1
- 7.5 / 10 HIGH source: f5sirt@f5.com
- NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Exploitability subscore
- 3.9 / 10
- Impact subscore
- 3.6 / 10
- EPSS score
- 0.0032 (probability of exploitation in next 30 days)
- EPSS percentile
- 24.95% vs all CVEs — higher = more likely to be exploited, as of 2026-08-01
NVD / KEV / EPSS data refreshed 2026-08-01 23:35 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2025-34632 - Assigner
- f5
- Published
- Oct 15, 2025, 1:55:51 PM
- Updated
- Feb 26, 2026, 4:57:38 PM
- EUVD base score (CVSS 4.0)
-
8.7 / 10
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - EUVD-reported EPSS
- 0.0400
- Vendors
- F5
- Products
-
BIG-IP (17.5.0 <17.5.1.3)BIG-IP (16.1.0 <16.1.6.1)BIG-IP (17.1.0 <17.1.3)BIG-IP (15.1.0 <15.1.10.8)
- Aliases
-
GHSA-g256-87j3-gw89
ENISA description: When a BIG-IP Advanced WAF or BIG-IP ASM Security Policy is configured with a JSON content profile that has a malformed JSON schema, and the security policy is applied to a virtual server, undisclosed requests can cause the bd process to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
EUVD references (1)
Affected products (1)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| F5 | BIG-IP |
17.5.0 (affected),
17.1.0 (affected),
16.1.0 (affected),
15.1.0 (affected)
|
— |
Affected products — CPE 2.3 (2) NVD
NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*
Vendor references (1)
References embedded in the original CVE record by the assigning CNA.
- https://my.f5.com/manage/s/article/K000156621 vendor-advisory
Web references (5)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
- http://cwe.mitre.org/data/definitions/674.html rapid7:cwe.mitre.org
- https://attackerkb.com/topics/CVE-2025-54858 rapid7:attackerkb.com
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-34632 rapid7:euvd.enisa.europa.eu
- https://my.f5.com/manage/s/article/K000156621 rapid7:my.f5.com
- https://www.cve.org/CVERecord?id=CVE-2025-54858 rapid7:www.cve.org
NVD-tagged references (1)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
- https://my.f5.com/manage/s/article/K000156621 f5sirt@f5.com Vendor Advisory
Remediations (18)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:arcticwolf.com
CVE -2026-48558 is a critical authentication bypass vulnerability in SimpleHelp Remote Monitoring and Management (RMM) software, caused by improper validation of OpenID Connect (OIDC) token signatures.
2026-09-24 07:27 UTC -
web:censys.com
Vulnerability Description: CVE -2026-24858 is a critical authentication bypass vulnerability (CVSS 9.4) affecting Fortinet FortiOS, FortiManager, FortiAnalyzer, FortiProxy, FortiWeb, and potentially FortiSwitch Manager. This vulnerability has been exploited in the wild and was added to the CISA Known Exploited Vulnerabilities catalog on January 27, 2026, with a remediation deadline of January ...
2026-09-24 07:27 UTC -
web:docs.veracode.com
Veracode Fix is an AI-assisted remediation solution that generates secure code patches for security findings across multiple finding types, including SAST and SCA. Developers can review the suggested patches and apply them to their application source without writing code.
2026-09-24 07:27 UTC -
web:github.com
CVEfixes: Automated Collection of Vulnerabilities and Their Fixes from Open-Source Software - secureIT-project/CVEfixes
2026-09-24 07:27 UTC -
web:senserva.com
Every Microsoft security patch (KB) and the CVEs it fixes, with severity, CVSS, and CISA KEV status. Cross-linked to the CVE reference.
2026-09-24 07:27 UTC -
web:socradar.io
Fortinet has released security updates and taken cloud-side mitigation steps, while government agencies have issued remediation deadlines. This blog explains what CVE -2026-24858 is, which products are affected, how the attacks worked, what indicators defenders should look for, and what actions organizations should take next.
2026-09-24 07:27 UTC -
web:squirrelvpn.com
CISA has added the SimpleHelp authentication bypass ( CVE -2026-48558) to its KEV catalog. Patch immediately to prevent credential theft and remote RMM exploitation.
2026-09-24 07:27 UTC -
web:www.upguard.com
CVE -2026-24858 is a critical (CVSS 9.8) Fortinet authentication bypass vulnerability in FortiOS, FortiManager, and more, currently under active exploitation.
2026-09-24 07:27 UTC -
web:www.cve.org
At cve .org, we provide the authoritative reference method for publicly known information-security vulnerabilities and exposures
2026-05-22 14:33 UTC -
web:www.oracle.com
This Critical Patch Update contains 374 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at October 2025 Critical Patch Update: Executive Summary and Analysis.
2026-05-22 14:33 UTC -
web:zecurit.com
Get the complete breakdown of Microsoft's May 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .
2026-05-22 14:33 UTC -
web:translate.google.com
Google's service, offered free of charge, instantly translates words, phrases, and web pages between English and over 100 other languages.
2026-05-22 14:33 UTC -
web:cybernews.com
Hackers are actively exploiting critical Fortinet FortiGate flaws to bypass SSO, steal configs, and hijack firewalls. CISA is urging users to patch immediately.
2026-05-22 14:33 UTC -
web:web.whatsapp.com
Log in to WhatsApp Web for simple, reliable and private messaging on your desktop. Send and receive messages and files with ease, all for free.
2026-05-22 14:33 UTC -
web:www.cisa.gov
Fortinet Releases Guidance to Address Ongoing Exploitation of Authentication Bypass Vulnerability CVE -2026-24858
2026-05-22 14:33 UTC -
web:nvd.nist.gov
An official website of the United States government Here's how you know
2026-05-22 14:33 UTC -
web:portal.msrc.microsoft.com
The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.
2026-05-22 14:33 UTC -
web:robertsspaceindustries.com
Hi Everyone! Time again for another Hotfix Central thread to keep you all up to date on things going on outside of the normal patch cycle in SC Alpha 4.8 LIVE! This will be a living document of...
2026-05-22 14:33 UTC
AI Forensic Analysis
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Raw JSON
The full cvelistV5 record. Download as CVE-2025-54858.json.
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