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No exploitation reportedAwaiting NVD analysis

CVE-2026-18596

No exploitation reported by the sources we read.

  • Published2026-11-12
  • WeaknessCWE-288

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An authentication bypass using an alternate path or channel vulnerability in the OTP in Synology DiskStation Manager (DSM) before 7.3.2-86009-5 and 7.4.1-90080-1 allows remote attackers with valid user credentials to read or write arbitrary files and conduct denial-of-service attacks.

Timeline

dates in UTC
  1. 2026-11-1203:32CVE publishedCNA

Versions per branch

Products declared by the CNA

As synology, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • Synology DiskStation Manager (DSM)other versions: affected
    Affected
    • ≥ 7.4.1, < 7.4.1-90080-1fixed in 7.4.1-90080-1semver
    • ≥ 7.3.2, < 7.3.2-86009-5fixed in 7.3.2-86009-5semver

    Not affected < 7.3.2 (status unknown)

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-12

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-18596 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVE record2026-11-12
  • CNACVSS 3.18.12026-11-12
  • CNAweakness (CWE)CWE-2882026-11-12

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2026-11-12

Frequently asked questions

What is CVE-2026-18596?

An authentication bypass using an alternate path or channel vulnerability in the OTP in Synology DiskStation Manager (DSM) before 7.3.2-86009-5 and 7.4.1-90080-1 allows remote attackers with valid user credentials to read or write arbitrary files and conduct denial-of-service attacks.

Is CVE-2026-18596 actively exploited?

Active exploitation of CVE-2026-18596 has not been confirmed.

What is the CVSS score for CVE-2026-18596?

CVE-2026-18596 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

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