Cyber Resilience

CVE-2026-42780

Medium

Published: 13 May 2026

Published
13 May 2026
Modified
13 May 2026
KEV Added
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Patch
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CVSS Score v4 6.9 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0032 55.9th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-42780 is a medium-severity Path Traversal (CWE-22) vulnerability. Its CVSS base score is 6.9 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique File Deletion (T1070.004); ranked in the top 44.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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.

CWE(s)
CWE-22

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1070.004 File Deletion Stealth
Adversaries may delete files left behind by the actions of their intrusion activity.
attack.mitre.org →
T1485 Data Destruction Impact
Adversaries may destroy data and files on specific systems or in large numbers on a network to interrupt availability to systems, services, and network resources.
attack.mitre.org →
T1565.001 Stored Data Manipulation Impact
Adversaries may insert, delete, or manipulate data at rest in order to influence external outcomes or hide activity, thus threatening the integrity of the data.
attack.mitre.org →
Why these techniques?

Directory traversal enabling arbitrary local file overwrite/delete/corruption directly maps to file deletion, data destruction, and stored data manipulation techniques.

Confidence: MEDIUM · MITRE ATT&CK Enterprise v18.1

Affected Assets

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Software
inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-10 Information Input Validation
addresses: CWE-22

Validates pathnames and filenames to prevent traversal outside intended directories.

References