CVE-2021-36806
MEDIUM
6.1
CVSS Score
Published: November 30, 2023 at 09:41 AM UTC
Updated: June 17, 2026 at 03:59 AM UTC
1 product affected across 1 vendorEmail Appliance
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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.4%
SSVC
No known exploit
Description
A reflected XSS vulnerability allows an open redirect when the victim clicks a malicious link to an error page on Sophos Email Appliance older than version 4.5.3.4.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 4.5.3.44.5.3.3
Affected range stops below 4.5.3.4, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (1)
SSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- CHANGED
- Confidentiality
- LOW
- Integrity
- LOW
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-79
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