CVE-2021-38693 json
Path Traversal in thttpd
published 2022-05-05 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-25132
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
Summary
A path traversal vulnerability has been reported to affect QNAP device running QuTScloud, QuTS hero, QTS, QVR Pro Appliance. If exploited, this vulnerability allows attackers to read the contents of unexpected files and expose sensitive data. We have already fixed this vulnerability in the following versions of QuTScloud, QuTS hero, QTS, QVR Pro Appliance: QuTScloud c5.0.1.1949 and later QuTS hero h5.0.0.1949 build 20220215 and later QuTS hero h4.5.4.1951 build 20220218 and later QTS 5.0.0.1986 build 20220324 and later QTS 4.5.4.1991 build 20220329 and later
Patch / fix
- QNAP Systems Inc. QuTScloud c5.0.1.1949
- QNAP Systems Inc. QuTS hero h4.5.4.1951 build 20220218, h5.0.0.1949 build 20220215
- QNAP Systems Inc. QTS 4.5.4.1991 build 20220329, 5.0.0.1986 build 20220324
Exploit prediction
0.95% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Affected products
- QNAP Systems Inc. QuTScloud
- QNAP Systems Inc. QuTS hero
- QNAP Systems Inc. QTS
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
References
-
qnap.com
/en/security-advisory/qsa-22-13
vendor-advisory
Sources
- CVE List CVE-2021-38693
- NVD CVE-2021-38693
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