CVE-2022-39185: EXFO - BV-10 Performance Endpoint Unit Undocumented privileged user

This month

CRITICAL 9.8REMOTEMITIGATE

CVE-2022-39185 is a critical-severity flaw (CVSS 9.8) affecting bv-10 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

EXFO - BV-10 Performance Endpoint Unit Undocumented privileged user. Unit has an undocumented hard-coded privileged user.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-798
Published	2023-01-12
Last modified	2026-06-17

Publisher (CNA): Israel National Cyber Directorate · Vendor: exfo

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-01-12 16:15 UTCPublished CVE record published
2026-06-17 04:57 UTCUpdated Record last modified

exfo bv-10 firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-39185?

bv-10 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-39185 being exploited?

CVE-2022-39185 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-39185 affect?

CVE-2022-39185 affects bv-10 firmware. Severity is critical (CVSS 9.8). EXFO - BV-10 Performance Endpoint Unit Undocumented privileged user. Unit has an undocumented hard-coded privileged user.

How urgent is CVE-2022-39185?

Priority 52/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2022-39186 MEDIUM 6.2 MITIGATE EXFO - BV-10 Performance Endpoint Unit misconfiguration
CVE-2022-39184 CRITICAL 9.8 MITIGATE EXFO - BV-10 Performance Endpoint Unit authentication bypass User can manually manipulate access enabling auth

References

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