CVE-2022-4636 — Black Box KVM Firmware version 3

Black Box KVM Firmware version 3.4.31307 on models ACR1000A-R-R2, ACR1000A-T-R2, ACR1002A-T, ACR1002A-R, and ACR1020A-T is vulnerable to path traversal, which may allow an attacker to steal user credentials and other sensitive information through local file inclusion.

01What is this vulnerability?

Black Box KVM Firmware version 3.4.31307 on models ACR1000A-R-R2, ACR1000A-T-R2, ACR1002A-T, ACR1002A-R, and ACR1020A-T is vulnerable to path traversal, which may allow an attacker to steal user credentials and other sensitive information through local file inclusion.

02Affected products

Vendor	Product	Versions
Black Box	KVM ACR1020A	T — 3.4.31307
Black Box	KVM ACR1002A	R — 3.4.31307
Black Box	KVM ACR1002A	T — 3.4.31307
Black Box	KVM ACR1000A	T-R2 — 3.4.31307
Black Box	KVM ACR1000A	R-R2 — 3.4.31307

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-01-10T19:54:23.077Z
• Last modified: 2025-01-16T22:02:48.888Z

09References

• www.cisa.gov — https://www.cisa.gov/uscert/ics/advisories/icsa-23-010-01