CVE-2026-74857
A NVD · · CVE-2026-74857
Admiralty grading (A–F · 1–6)
Source reliability
- A Completely reliable
- B Usually reliable
- C Fairly reliable
- D Not usually reliable
- E Unreliable
- F Cannot be judged
Information credibility
- 1 Confirmed
- 2 Probably true
- 3 Possibly true
- 4 Doubtful
- 5 Improbable
- 6 Cannot be judged
NATO Admiralty (AJP-2.1) grades confidence, independent of the risk score. Cross-source corroboration isn't tracked for non-CVE news, so single-source items are capped at a lower credibility number; a low number does not imply low quality.
Key metrics
- CVSS
- 8.8
- EPSS
- 0%
Key insight
The report describes a vulnerability that requires already authenticated attackers; it contains no indication of active exploitation or a PoC.
Description
CVE-2026-74857 affects the Auth API in Synology DiskStation Manager before 7.3.2-86009-5 and 7.4.1-90080-1. The cause is a missing critical authentication step that allows remote, already authenticated users to read or write arbitrary files. Such attackers can also trigger denial-of-service attacks. The report contains no information about active exploitation, a public PoC, or KEV inclusion.
Risk score
- cvss base
- 88.00
- kev bonus
- 0.00
- epss bonus
- 0.00
- poc bonus
- 0.00
- raw before weight
- 88.00
- industry weight
- 1.21
- freshness factor
- 1.00
- exploitability factor
- 1.00
- days old
- 0.00
- vendor mismatch penalty
- 0.00
Path: operational