CVE-2021-26567
HIGH
7.8
CVSS Score
Published: February 26, 2021 at 09:45 PM UTC
Updated: June 17, 2026 at 03:43 AM UTC
9 products affected across 3 vendorsDiskStation ManagerVS960HD FirmwareDiskstation Manager Unified Controller
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Severity
HIGH7.8
Exploit prediction
EPSS 1%
Description
Stack-based buffer overflow vulnerability in frontend/main.c in faad2 before 2.2.7.1 allow local attackers to execute arbitrary code via filename and pathname options.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 2.2.7.1
Affected range stops below 2.2.7.1, so it looks safe — our inference, not a vendor statement
v < 6.2.3-25426-3
Affected range stops below 6.2.3-25426-3, so it looks safe — our inference, not a vendor statement
v < 2.2.7.1
Affected range stops below 2.2.7.1, so it looks safe — our inference, not a vendor statement
Skynas· Synologydevice
80%All versions
Uc3200· Synologydevice
80%All versions
VS960HD· Synologydevice
80%All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (2)
x_refsource_MISCPatch
Source: [email protected]
https://github.com/knik0/faad2/commit/720f7004d6c4aabee19aad16e7c456ed76a3ebfax_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://www.synology.com/security/advisory/Synology_SA_20_26CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-121CWE-787
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