Cyber Resilience

CVE-2021-27791

Medium

Published: 12 August 2021

Published
12 August 2021
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
EPSS Score 0.0037 59.0th percentile
Risk Priority 11 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-27791 is a medium-severity Out-of-bounds Read (CWE-125) vulnerability in Broadcom Fabric Operating System. Its CVSS base score is 5.4 (Medium).

Operationally, ranked in the top 41.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

The function that is used to parse the Authentication header in Brocade Fabric OS Web application service before Brocade Fabric OS v9.0.1a and v8.2.3a fails to properly process a malformed authentication header from the client, resulting in reading memory addresses…

more

outside the intended range. An unauthenticated attacker could discover a request, which could bypass the authentication process.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

broadcom
fabric operating system
8.2.1 — 8.2.3a · 9.0.0 — 9.0.1a

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References