CVE-2022-40977 — A path traversal vulnerability was discovered in Pilz PASvisu Server before 1

A path traversal vulnerability was discovered in Pilz PASvisu Server before 1.12.0. An unauthenticated remote attacker could use a zipped, malicious configuration file to trigger arbitrary file writes ('zip-slip'). File writes do not affect confidentiality or availabili

01What is this vulnerability?

A path traversal vulnerability was discovered in Pilz PASvisu Server before 1.12.0. An unauthenticated remote attacker could use a zipped, malicious configuration file to trigger arbitrary file writes ('zip-slip'). File writes do not affect confidentiality or availability.

02Affected products

Vendor	Product	Versions
PILZ	PASvisu	1.0.0
PILZ	PMI v5xx (265507 + 265512)	1.0.0
PILZ	PMI v7xx (266704 + 266707)	1.0.0
PILZ	PMI v8xx (266807, 266812, 266815)	1.0.0

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: 2022-11-24T09:20:22.838Z
• Last modified: 2025-04-24T19:47:34.589Z

09References

• cert.vde.com — https://cert.vde.com/en/advisories/VDE-2022-033/