CVE-2026-40534 json
An improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Video API in Synology DiskStation…
published 2026-09-18 52 d ago modified 2026-09-18 51 d ago also EUVD-2026-82789
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 19%
- public exploits
- 0
- none known
Summary
An improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Video API in Synology DiskStation Manager (DSM) before 7.2.1-69057-10, 7.2.2-72806-7 and 7.3.2-86009-2 allows remote authenticated users to read or write limited files when the player is launched.
Patch / fix
- Synology DiskStation Manager (DSM) 7.2.1-69057-10, 7.2.2-72806-7, 7.3.2-86009-2
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 51 d ago
Exploit prediction
0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected products
- Synology DiskStation Manager (DSM)
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
synology.com
/en-global/security/advisory/Synology_SA_26_06
vendor-advisory
Sources
- CVE List CVE-2026-40534
- NVD CVE-2026-40534
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