CVE-2021-38693

Path Traversal in thttpd

MEDIUM

5.3

CVSS Score

Published: May 5, 2022 at 04:50 PM UTC

Updated: June 17, 2026 at 04:02 AM UTC

3 products affected across 1 vendorQTSQuTS heroQuTScloud

Using QuTScloud by QNAP Systems Inc.?

Get instant alerts when new vulnerabilities affect QuTScloud - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

MEDIUM5.3

Exploit prediction

EPSS 1.0%

Description

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

QTS · Qnap

95%

v < 4.5.4.1991v < 4.5.4.1991 build 20220329v < 5.0.0.1986 build 202203245.0.0.1716 ≤ v < 5.0.0.1986

Affected range stops below 4.5.4.1991, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.5.4.1991 build 20220329, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.0.0.1986, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.0.0.1986 build 20220324, so it looks safe — our inference, not a vendor statement

QuTS hero · Qnap

95%

v < h4.5.4.1951 build 20220218v < h5.0.0.1949 build 20220215h5.0.0.1772 ≤ v < h5.0.0.1949

Affected range stops below h4.5.4.1951 build 20220218, so it looks safe — our inference, not a vendor statement

Affected range stops below h5.0.0.1949, so it looks safe — our inference, not a vendor statement

Affected range stops below h5.0.0.1949 build 20220215, so it looks safe — our inference, not a vendor statement

QuTScloud · Qnap

95%

v < c5.0.1.1949

Affected range stops below c5.0.1.1949, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://www.qnap.com/en/security-advisory/qsa-22-13

References (1)

x_refsource_MISCVendor Advisory

Source: [email protected]

https://www.qnap.com/en/security-advisory/qsa-22-13

CVSS

5.3MEDIUMqnap

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: LOW
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-22

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create account Sign in

Free plan, no card