CVE-2025-55036
📛 CVE Title
BIG-IP SSL Orchestrator vulnerability
Description
When BIG-IP SSL Orchestrator explicit forward proxy is configured on a virtual server and the proxy connect feature is enabled, undisclosed traffic may cause memory corruption. 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-787 - 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/2025/55xxx/CVE-2025-55036.json
- Linked Threat
- CVE-2025-55036 — BIG-IP SSL Orchestrator 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 14:15:51 UTC
- NVD last modified
- 2026-06-17 09:41:08 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
- 24.90% vs all CVEs — higher = more likely to be exploited, as of 2026-08-06
NVD / KEV / EPSS data refreshed 2026-08-06 23:02 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-2025-34645 - Assigner
- f5
- Published
- Oct 15, 2025, 1:55:46 PM
- Updated
- Feb 26, 2026, 4:57:44 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
- 0.0900
- Vendors
- F5
- Products
-
BIG-IP (17.1.0 <17.1.3)BIG-IPBIG-IP (15.1.0 <15.1.10.8)BIG-IP (16.1.0 <16.1.6)
- Aliases
-
GHSA-5w8q-m8cq-gcqq
ENISA description: When BIG-IP SSL Orchestrator explicit forward proxy is configured on a virtual server and the proxy connect feature is enabled, undisclosed traffic may cause memory corruption. 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 (unaffected),
17.1.0 (affected),
16.1.0 (affected),
15.1.0 (affected)
|
— |
Affected products — CPE 2.3 (1) 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_ssl_orchestrator:*:*:*:*:*:*:*:*
Vendor references (1)
References embedded in the original CVE record by the assigning CNA.
- https://my.f5.com/manage/s/article/K000151368 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/787.html rapid7:cwe.mitre.org
- https://attackerkb.com/topics/CVE-2025-55036 rapid7:attackerkb.com
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-34645 rapid7:euvd.enisa.europa.eu
- https://my.f5.com/manage/s/article/K000151368 rapid7:my.f5.com
- https://www.cve.org/CVERecord?id=CVE-2025-55036 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/K000151368 f5sirt@f5.com Vendor Advisory
Remediations (17)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:www.cvefind.com
CVE Find is a real-time vulnerability database indexing 396 899 security flaws ( CVE ) from MITRE, NVD, CISA KEV, CWE and CAPEC. 3013 new CVEs were published in the last 7 days. Data aggregated from: MITRE Corporation ( CVE , CWE, CAPEC), National Vulnerability Database - NIST (NVD), CISA Known Exploited Vulnerabilities (KEV), FIRST (EPSS).
2026-09-24 05:56 UTC -
web:msrc.microsoft.com
The Microsoft Security Response Center (MSRC) investigates all reports of security vulnerabilities affecting Microsoft products and services, and provides the information here as part of the ongoing effort to help you manage security risks and help keep your systems protected.
2026-09-24 05:56 UTC -
web:msrc.microsoft.com
Access Microsoft Security Response Center's guide to address vulnerabilities, manage security risks, and keep your systems protected with the latest updates.
2026-09-24 05:56 UTC -
web:www.opencve.io
OpenCVE is a vulnerability intelligence platform that helps security teams monitor CVEs , track affected vendors, and receive real-time vulnerability alerts.
2026-09-24 05:56 UTC -
web:github.com
CVEfixes: Automated Collection of Vulnerabilities and Their Fixes from Open-Source Software - secureIT-project/CVEfixes
2026-09-24 05:56 UTC -
web:www.oracle.com
Prior Critical Patch Update and Critical Security Patch Update advisories should be reviewed for information regarding earlier published security patches. Refer to Critical Patch Updates, Critical Security Patch Updates, Security Alerts and Bulletins for information about Oracle Security advisories.
2026-09-24 05:56 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 05:56 UTC -
web:www.esri.com
Key highlights The ArcGIS Server Security 2025 update 2 is available This patch resolves 10 Medium severity vulnerabilities This security patch is cumulative, and includes fixes provided in the ArcGIS Server Security 2025 update 1.
2026-05-22 14:35 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 14:35 UTC -
web:4sysops.com
The Enhanced Mitigation Experience Toolkit is provided as an MSI file, making manual installation or deployments very straightforward. First, go to the Microsoft Download center and download EMET 5.5.
2026-05-22 14:35 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 14:35 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 14:35 UTC -
web:support.servicenow.com
Overview The advisories below document publicly disclosed Common Vulnerabilities and Exposures ( CVEs ) in the Now Platform by ServiceNow. Because ServiceNow uses various methods to communicate vulnerability information, patches, and other fixes, customers should review family, security patch , and hotfix release notes, which are available at https://docs.servicenow.com, for a complete list of ...
2026-05-22 14:35 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 14:35 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 14:35 UTC -
web:www.cisa.gov
Identify affected repositories. Conduct an audit to locate all projects using all versions of tj-actions/changed-files between 2025 -03-12 00:00 UTC to 2025 -03-15 12:00 UTC in your organization and/ or the reviewdog/action between March 11, 2025 , between 18:42 and 20:31 UTC.
2026-05-22 14:35 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 14:35 UTC
AI Forensic Analysis
Only Available for Registered Users. Sign in to view.
Raw JSON
The full cvelistV5 record. Download as CVE-2025-55036.json.
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-55036",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-10-16T03:56:35.081428Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-02-26T16:57:44.982Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"modules": [
"SSL Orchestrator"
],
"product": "BIG-IP",
"vendor": "F5",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "17.5.0",
"versionType": "custom"
},
{
"lessThan": "17.1.3",
"status": "affected",
"version": "17.1.0",
"versionType": "custom"
},
{
"lessThan": "16.1.6",
"status": "affected",
"version": "16.1.0",
"versionType": "custom"
},
{
"lessThan": "15.1.10.8",
"status": "affected",
"version": "15.1.0",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "F5"
}
],
"datePublic": "2025-10-15T14:00:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "<span style=\"background-color: rgb(255, 255, 255);\">\n\n<span style=\"background-color: rgb(255, 255, 255);\">When BIG-IP SSL Orchestrator explicit forward proxy is configured on a virtual server and the proxy connect feature is enabled, undisclosed traffic may cause memory corruption.</span> </span>Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated."
}
],
"value": "When BIG-IP SSL Orchestrator explicit forward proxy is configured on a virtual server and the proxy connect feature is enabled, undisclosed traffic may cause memory corruption.\u00a0\u00a0Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
},
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "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",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-787",
"description": "CWE-787: Out-of-bounds Write",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-10-15T13:55:46.932Z",
"orgId": "9dacffd4-cb11-413f-8451-fbbfd4ddc0ab",
"shortName": "f5"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://my.f5.com/manage/s/article/K000151368"
}
],
"source": {
"discovery": "INTERNAL"
},
"title": "BIG-IP SSL Orchestrator vulnerability",
"x_generator": {
"engine": "F5 SIRTBot v1.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "9dacffd4-cb11-413f-8451-fbbfd4ddc0ab",
"assignerShortName": "f5",
"cveId": "CVE-2025-55036",
"datePublished": "2025-10-15T13:55:46.932Z",
"dateReserved": "2025-10-03T23:04:21.079Z",
"dateUpdated": "2026-02-26T16:57:44.982Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}