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TI-2021-14809 Aliases CVE-2021-36580GHSA-5q6m-32cq-4f86

Open Redirect vulnerability exists in IceWarp MailServer IceWarp Server Deep Castle 2…

Priority MEDIUM 60CWE-601Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Spoofing
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-601.

Summary

Open Redirect vulnerability exists in IceWarp MailServer IceWarp Server Deep Castle 2 Update 1 (13.0.1.2) via the referer parameter.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01588 75th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:icewarp:icewarp_server:*:*:*:*:*:*:*:*before 13.0.1.2VulnerableIceWarp
cpe:2.3:a:icewarp:mail_server:*:*:*:*:*:*:*:*before 13.0.1.2VulnerableIceWarp
  • cpe:2.3:a:icewarp:icewarp_server:*:*:*:*:*:*:*:* Versions before 13.0.1.2 Vulnerable ·IceWarp
  • cpe:2.3:a:icewarp:mail_server:*:*:*:*:*:*:*:* Versions before 13.0.1.2 Vulnerable ·IceWarp

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-36580
  2. 2026-10-03 Alias added: GHSA-5q6m-32cq-4f86

References

Other 1

  • TI-2020-06832 In IceWarp Webmail Server through 11.4.4.1, there is XSS in the /webmail/ color parameter. CVSS 3.1MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences