Arbitrary File Overwrite using less command

published 2023-08-02 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-36215

cvss: 7.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 4%
public exploits: 0; none known

System files could be overwritten using the less command in Brocade Fabric OS before Brocade Fabric OS v9.1.1c and v9.2.0.

Patch / fix

fixed in 1

broadcom brocade_fabric_operating_system 9.1.1c

Exploit prediction

0.16% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.1	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
NVD	3.1	7.1	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Affected products

Brocade Fabric OS

Classification

Weakness

CWE-281 Improper Preservation of Permissions
CWE-665 Improper Initialization

References

support.broadcom.com /external/content/SecurityAdvisories/0/22388
vendor-advisory
security.netapp.com /advisory/ntap-20230908-0007/
third-party-advisory

Sources

CVE List CVE-2023-31926
NVD CVE-2023-31926

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary