9.8

CVE-2023-28531: netapp brocade_fabric_operating_system Improper Access Control

Modified
AliasesALPINE-CVE-2023-28531UBUNTU-CVE-2023-28531DEBIAN-CVE-2023-28531
Published 17-03-2023Last modified 14-10-2026

Vulnerability summary

CVE-2023-28531 is a critical (CVSS 9.8) Improper Access Control vulnerability in netapp brocade_fabric_operating_system. EPSS estimates a 2.99% chance of exploitation in the next 30 days, higher than 87.3% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 9.8 (NVD); no exploitation reported by the 5 checked sources; EPSS 3% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
2.99%
0%100%
Low · +0.72 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
USN-6560-1

Timeline

  1. 17-03-2023
    PublishedVulnerability first disclosed.
  2. 14-10-2026
    Last modifiedVulnerability information updated.

Description

ssh-add in OpenSSH before 9.3 adds smartcard keys to ssh-agent without the intended per-hop destination constraints. The earliest affected version is 8.9.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

2.99%

Chance of exploitation in the next 30 days

Percentile

87%

Versus all other CVEs

30-day change

Increase +0.72 pp

From 2.27% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Netapp3 products
Alpine1 product
  • openssh≥ 8.9, < 9.0_p1-r3 | ≥ 8.9, < 9.1_p1-r3
Debian1 product
  • openssh< 1:9.2p1-2+deb12u2 | < 1:9.3p1-1
Openbsd1 product
Ubuntu1 product
  • openssh< 1:8.9p1-3ubuntu0.5

5 vendors · 7 products

References

15 links
Show all 15 references