- Description
- A link following vulnerability has been reported to affect several QNAP operating system versions. The remote attackers can then exploit the vulnerability to traverse the file system to unintended locations. We have already fixed the vulnerability in the following versions: QTS 5.2.8.3350 build 20251216 and later QuTS hero h5.3.2.3354 build 20251225 and later QuTS hero h5.2.8.3350 build 20251216 and later
- Source
- security@qnapsecurity.com.tw
- NVD status
- Analyzed
- Products
- qts, quts_hero
CVSS 4.0
- Type
- Secondary
- Base score
- 9.2
- Impact score
- -
- Exploitability score
- -
- Vector string
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Severity
- CRITICAL
CVSS 3.1
- Type
- Primary
- Base score
- 9.8
- Impact score
- 5.9
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Severity
- CRITICAL
- security@qnapsecurity.com.tw
- CWE-59
- Hype score
- Not currently trending
⚠️ Vulnerabilidad en productos QNAP ❗ CVE-2025-66277 ➡️ Más info: https://t.co/8nj62rFnr7 https://t.co/GRTWc178fW
@CERTpy
17 Feb 2026
130 Impressions
0 Retweets
0 Likes
1 Bookmark
0 Replies
0 Quotes
There is a new vulnerability with elevated criticality in QNAP Systems QTS and QuTS hero (CVE-2025-66277) https://t.co/hJm7MVI5ms
@vuldb
11 Feb 2026
80 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
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