CVE-2021-26563: synology diskstation_manager Incorrect Authorization
CVSS: 8.2v3.1HighModified
Published 26-02-2021Last modified 16-09-2024
Vulnerability summary
CVE-2021-26563 is a high (CVSS 8.2) Incorrect Authorization vulnerability in synology diskstation_manager. EPSS estimates a 0.51% chance of exploitation in the next 30 days, higher than 42.4% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
8.2/10
010
High · v3.1 (CVE.org)EPSS score
0.51%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Timeline
- 26-02-2021PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
Incorrect authorization vulnerability in synoagentregisterd in Synology DiskStation Manager (DSM) before 6.2.4-25553 allows local users to execute arbitrary code via unspecified vectors.
CVSS metrics
3 scores · 2 sources · 2 versionsHigh 8.2Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:HSources2 sources · 6.7–8.2
- NVDNIST6.7MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HDiffers
Medium 4.6Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
0.51%
Chance of exploitation in the next 30 days
Percentile
42%
Versus all other CVEs
30-day change
0.00 pp
From 0.51% on 18-09-2026
18-09-202618-10-2026
EPSS score0.51%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (talosintelligence.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Synology5 products
- diskstation_manager< 6.2.4-25553
- diskstation manager (dsm)≥ unspecified, < 6.2.4-25553
- diskstation_manager_unified_controller3.0
- skynasna
- vs960hd_firmwarena
1 vendor · 5 products
References
2 links- www.talosintelligence.com/vulnerability_reports/TALOS-2020-1158X Refsource MISCExploitThird Party Advisory