Medium 4.9Published May 13, 2026

CVE-2026-42780BIG-IP SSL Orchestrator vulnerability

Updated under an hour ago (Oct 27, 2026, 4:30 PM ET)

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It affects F5 BIG-IP and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 4.9 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Weakness (CWE): CWE-22
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: f5
NVD analysis: Analyzed
Record last updated: May 13, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

F5 BIG-IP f5:big_ip (from the name)	from 21.1.0 not affected; from 21.0.0 before 21.0.0.1; from 17.5.0 before 17.5.1.5; from 17.1.0 before 17.1.3.1; from 16.1.0	CNA record
F5 SSL Orchestrator f5:ssl_orchestrator (from the name)	from 14.0 not affected; from 13.0 before 13.1.3; from 12.0 before 12.3.2; from 11.0 before 11.4.1	CNA record
f5 big-ip_ssl_orchestrator f5:big-ip_ssl_orchestrator	from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; 21.0.0	NVD

References

References

https://my.f5.com/manage/s/article/K000149743	vendor-advisory, patch, mitigation

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.