CVE-2026-81584
A NVD · · CVE-2026-81584
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
- 8.1
- EPSS
- 0%
Key insight
The decisive factor is the attack scenario via an already compromised LDAP/AD server: the NAS becomes a lateral target through which attackers can read and write arbitrary files.
Description
Vulnerability CVE-2026-81584 affects the User API of Synology DiskStation Manager in versions before 7.3.2-86009-5 and 7.4.1-90080-1. The cause is improper neutralization of special elements in SQL commands, allowing a remote attacker to inject SQL statements. The flaw is exploitable when the attacker already controls a compromised LDAP or Active Directory server to which the device is connected. In that scenario, arbitrary files can be read or written and denial-of-service attacks can be conducted against the system. Active exploitation or a public exploit has not been documented at the time of this report.
Risk score
- cvss base
- 81.00
- kev bonus
- 0.00
- epss bonus
- 0.00
- poc bonus
- 0.00
- raw before weight
- 81.00
- industry weight
- 1.21
- freshness factor
- 1.00
- exploitability factor
- 1.00
- days old
- 0.00
- vendor mismatch penalty
- 0.00
Path: operational