CVE-2026-86343
A NVD · · CVE-2026-86343
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
- 6.8
- EPSS
- 0%
Key insight
Exploitation requires administrator privileges, making this primarily an escalation and persistence risk for compromised or insider-controlled NAS systems rather than an entry point for unauthenticated external attackers.
Description
Synology DiskStation Manager (DSM) before versions 7.3.2-86009-5 and 7.4.1-90080-1 contains a vulnerability in the SNMP API in which CRLF sequences are not properly neutralized. A remote authenticated user with administrator privileges can thereby read or write arbitrary files and conduct denial-of-service attacks against the system. The attack requires valid administrative credentials and is not possible without prior authentication. As of the report, there is no information on active exploitation in the wild or inclusion in the CISA KEV list; the assessment is based on the NVD description. Affected are NAS systems with SNMP functionality enabled.
Risk score
- cvss base
- 68.00
- kev bonus
- 0.00
- epss bonus
- 0.00
- poc bonus
- 0.00
- raw before weight
- 68.00
- industry weight
- 1.21
- freshness factor
- 1.00
- exploitability factor
- 1.00
- days old
- 0.00
- vendor mismatch penalty
- 0.00
Path: operational