CVE-2021-26562
HIGHCVSS 8.1/10EPSS 1.71%
Last modified
CVE-2021-26562 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. Out-of-bounds write vulnerability in synoagentregisterd in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows man-in-the-middle attackers to execute arbitrary code via syno_finder_site HTTP header.. EPSS estimates a 1.71% chance of exploitation in the next 30 days.
Description
Out-of-bounds write vulnerability in synoagentregisterd in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows man-in-the-middle attackers to execute arbitrary code via syno_finder_site HTTP header.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Synology | Diskstation Manager | < 6.2.3-25426-3 |
| Synology | Vs960hd Firmware | All versions |
| Synology | Skynas Firmware | All versions |
| Synology | Diskstation Manager Unified Controller | 3.0 |
References
- https://www.synology.com/security/advisory/Synology_SA_20_26Vendor Advisory
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1159Exploit, Third Party Advisory
- https://www.synology.com/security/advisory/Synology_SA_20_26Vendor Advisory
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1159Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-26562?
Out-of-bounds write vulnerability in synoagentregisterd in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows man-in-the-middle attackers to execute arbitrary code via syno_finder_site HTTP header.
How severe is CVE-2021-26562?
CVE-2021-26562 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 1.71% probability of exploitation in the next 30 days.
How do I fix CVE-2021-26562?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-26562?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST