CVE-2021-44052
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2021
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Arbitrary file read
An improper link resolution before file access ('Link Following') vulnerability has been reported to affect QNAP device running QuTScloud, QuTS hero, and QTS. If exploited, this vulnerability allows remote attackers to traverse the file system to unintended locations and read or overwrite the contents of unexpected files. We have already fixed this vulnerability in the following versions of QuTScloud, QuTS hero, and QTS: QuTScloud c5.0.1.1998 and later QuTS hero h4.5.4.1971 build 20220310 and later QuTS hero h5.0.0.1986 build 20220324 and later QTS 4.3.4.1976 build 20220303 and later QTS 4.3.3.1945 build 20220303 and later QTS 4.2.6 build 20220304 and later QTS 4.3.6.1965 build 20220302 and later QTS 5.0.0.1986 build 20220324 and later QTS 4.5.4.1991 build 20220329 and later
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
QuTScloud
- Vendor
- QNAP Systems Inc.
- Product
- QuTScloud
- Platforms
- Unknown
- Default status
Unknown
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| unspecified | affected | custom | c5.0.1.1998 | Unavailable | None listed |
QuTS hero
- Vendor
- QNAP Systems Inc.
- Product
- QuTS hero
- Platforms
- Unknown
- Default status
Unknown
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| unspecified | affected | custom | h4.5.4.1971 build 20220310 | Unavailable | None listed |
| unspecified | affected | custom | h5.0.0.1986 build 20220324 | Unavailable | None listed |
QTS
- Vendor
- QNAP Systems Inc.
- Product
- QTS
- Platforms
- Unknown
- Default status
Unknown
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| unspecified | affected | custom | 4.3.4.1976 build 20220303 | Unavailable | None listed |
| unspecified | affected | custom | 4.3.3.1945 build 20220303 | Unavailable | None listed |
| unspecified | affected | custom | 4.2.6 build 20220304 | Unavailable | None listed |
| unspecified | affected | custom | 4.3.6.1965 build 20220302 | Unavailable | None listed |
| unspecified | affected | custom | 5.0.0.1986 build 20220324 | Unavailable | None listed |
| unspecified | affected | custom | 4.5.4.1991 build 20220329 | Unavailable | None listed |