CVE-2021-27648 json
Externally controlled reference to a resource in another sphere in quarantine functionality in Synology Antivirus Essential before 1.4.8-28…
published 2021-04-28 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-14394
- cvss
- 9.0
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.8%
- EPSS 2.8% chance of exploitation in 30 days, percentile 86%
- public exploits
- 0
- none known
Summary
Externally controlled reference to a resource in another sphere in quarantine functionality in Synology Antivirus Essential before 1.4.8-2801 allows remote authenticated users to obtain privilege via unspecified vectors.
Patch / fix
- Synology Synology Antivirus Essential 1.4.8-2801
Exploit prediction
2.84% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.0 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P |
Affected products
- Synology Synology Antivirus Essential
Classification
- Weakness
-
- CWE-610 Externally Controlled Reference to a Resource in Another Sphere
References
-
synology.com
/security/advisory/Synology_SA_21_15
vendor-advisory
Sources
- CVE List CVE-2021-27648
- NVD CVE-2021-27648
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