F5 BIG-IP SSL Orchestrator up to 15.1.10/16.1.5/17.1.2 Forward Proxy out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in F5 BIG-IP SSL Orchestrator up to 15.1.10/16.1.5/17.1.2. The affected element is an unknown function of the component Forward Proxy. The manipulation results in out-of-bounds write. This vulnerability is identified as CVE-2025-55036. The attack can be executed remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in F5 BIG-IP SSL Orchestrator up to 15.1.10/16.1.5/17.1.2. It has been classified as critical. Affected is an unknown functionality of the component Forward Proxy. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on availability. CVE summarizes:

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.

The advisory is available at my.f5.com. This vulnerability is traded as CVE-2025-55036 since 10/04/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/17/2025).

The vulnerability scanner Nessus provides a plugin with the ID 270607 (F5 Networks BIG-IP : BIG-IP SSL Orchestrator vulnerability (K000151368)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 15.1.10.8, 16.1.6 or 17.1.3 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (270607). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 270607
Nessus Name: F5 Networks BIG-IP : BIG-IP SSL Orchestrator vulnerability (K000151368)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: BIG-IP SSL Orchestrator 15.1.10.8/16.1.6/17.1.3

Timelineinfo

10/04/2025 CVE reserved
10/15/2025 +11 days Advisory disclosed
10/15/2025 +0 days VulDB entry created
10/17/2025 +2 days VulDB entry last update

Sourcesinfo

Vendor: f5.com

Advisory: K000151368
Status: Confirmed

CVE: CVE-2025-55036 (🔒)
GCVE (CVE): GCVE-0-2025-55036
GCVE (VulDB): GCVE-100-328686

Entryinfo

Created: 10/15/2025 16:12
Updated: 10/17/2025 06:10
Changes: 10/15/2025 16:12 (77), 10/17/2025 06:10 (2)
Complete: 🔍
Cache ID: 216:CE7:103

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