CVE-2022-4402 — A vulnerability classified as critical has been found in RainyGao DocSys 2

A vulnerability classified as critical has been found in RainyGao DocSys 2.02.37. This affects an unknown part of the component ZIP File Decompression Handler. The manipulation leads to path traversal: '../filedir'. It is possible to initiate the attack remotely. The ex

01What is this vulnerability?

A vulnerability classified as critical has been found in RainyGao DocSys 2.02.37. This affects an unknown part of the component ZIP File Decompression Handler. The manipulation leads to path traversal: '../filedir'. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-215271.

02Affected products

Vendor	Product	Versions
RainyGao	DocSys	2.02.37

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: 2022-12-11T00:00:00.000Z
• Last modified: 2025-04-15T13:05:54.321Z

09References

• github.com — https://github.com/A-TGAO/MxsDocVul/blob/main/ZipSlipVul.md
• gitee.com — https://gitee.com/RainyGao/DocSys/issues/I65IYU
• vuldb.com — https://vuldb.com/?id.215271