CVE-2026-42780

BIG-IP SSL Orchestrator vulnerability

Published May 13, 2026 CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

Description

A directory traversal vulnerability exists in BIG-IP SSL Orchestrator that allows an authenticated attacker with high privilege to overwrite, delete or corrupt arbitrary local files.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Analysis

Technical impact

A directory traversal flaw in the F5 BIG‑IP SSL Orchestrator allows an attacker who has already authenticated with high‑level privileges to overwrite, delete, or corrupt arbitrary local files. This path traversal (CWE‑22) vulnerability undermines the integrity of the system and can disrupt or compromise services.

Affected Systems

The issue affects F5’s BIG‑IP product and its connected SSL Orchestrator component. No specific version numbers are listed, but any supported installation that has not reached End of Technical Support may be vulnerable.

Risk and Exploitability

The CVSS score of 6.9 indicates moderate severity. EPSS is not available, and the vulnerability is not in CISA’s KEV catalog. Exploitation requires an authenticated attacker with high‑privileges, so the risk largely depends on internal access controls and credential protection.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

BIG-IP

unknown

Version	Status	Constraints
`21.1.0`	unaffected	< *
`21.0.0`	affected	< 21.0.0.1
`17.5.0`	affected	< 17.5.1.5
`17.1.0`	affected	< 17.1.3.1
`16.1.0`	affected	< *

SSL Orchestrator

unknown

Version	Status	Constraints
`14.0`	unaffected	< *
`13.0`	affected	< 13.1.3
`12.0`	affected	< 12.3.2
`11.0`	affected	< 11.4.1

Configuration 1 [-]

OR	cpe:2.3:a:f5:big-ip_ssl_orchestrator::::::::
	cpe:2.3:a:f5:big-ip_ssl_orchestrator::::::::

Configuration 2 [-]

cpe:2.3:a:f5:big-ip_ssl_orchestrator:21.0.0:*:*:*:*:*:*:*

No data.

Vendor Product Versions

Big-ip

Version	Status	Scheme	Platform
`[21.1.0,*]`	unaffected	semver	—
`[21.0.0,21.0.0.1)`	affected	semver	—
`[17.5.0,17.5.1.5)`	affected	generic	—
`[17.1.0,17.1.3.1)`	affected	generic	—
`[16.1.0,*]`	affected	semver	—

Ssl Orchestrator

Version	Status	Scheme	Platform
`[14.0,*]`	unaffected	generic	—
`[13.0,13.1.3)`	affected	generic	—
`[12.0,12.3.2)`	affected	generic	—
`[11.0,11.4.1)`	affected	generic	—

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Apply the latest security patch for BIG‑IP SSL Orchestrator as released by F5
Restrict high‑privilege account usage and enforce the principle of least privilege to limit traversal exploitation
Implement file‑integrity monitoring to detect unauthorized overwrites or deletions of critical system files

Generated by OpenCVE AI on May 13, 2026 at 17:45 UTC.

Tracking

Advisories

No advisories available

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.886% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://my.f5.com/manage/s/article/K000149743

History

May 13, 2026 6:45 PM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		F5 F5 big-ip F5 ssl Orchestrator
Vendors & Products		F5 F5 big-ip F5 ssl Orchestrator

May 13, 2026 5:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

May 13, 2026 3:15 PM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		A directory traversal vulnerability exists in BIG-IP SSL Orchestrator that allows an authenticated attacker with high privilege to overwrite, delete or corrupt arbitrary local files. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Title		BIG-IP SSL Orchestrator vulnerability
Weaknesses		CWE-22
References		https://my.f5.com/manage/s/article/K000149743
Metrics		cvssV3_1 `{'score': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N'}` cvssV4_0 `{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}`