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TI-2021-12963 Aliases CVE-2021-33576GHSA-83pw-wxhw-r33r

An issue was discovered in Cleo LexiCom 5.5.0.0.

Priority MEDIUM 45CWE-22Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

An issue was discovered in Cleo LexiCom 5.5.0.0. Within the AS2 message, the sender can specify a filename. This filename can include path-traversal characters, allowing the file to be written to an arbitrary location on disk.

Why it matters now

EPSS 0.01549 75th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

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

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cleo:lexicom:5.5.0.0:*:*:*:*:*:*:*5.5.0.0VulnerableCleo
  • cpe:2.3:a:cleo:lexicom:5.5.0.0:*:*:*:*:*:*:* Versions 5.5.0.0 Vulnerable ·Cleo

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-33576
  2. 2026-10-03 Alias added: GHSA-83pw-wxhw-r33r

References

Exploit 1

Other 1

  • TI-2024-36997 In Cleo Harmony before 5.8.0.24, VLTrader before 5.8.0.24, and LexiCom before 5.8.0.24… KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-34043 In Cleo Harmony before 5.8.0.21, VLTrader before 5.8.0.21, and LexiCom before 5.8.0.21… KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-12964 An issue was discovered in Cleo LexiCom 5.5.0.0. CVSS 3.1MEDIUM 5.3

Sources

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