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Medium severity5.8NVD Advisory· Published Feb 19, 2025· Updated Jun 17, 2026

CVE-2025-20153

CVE-2025-20153

Description

A vulnerability in the email filtering mechanism of Cisco Secure Email Gateway could allow an unauthenticated, remote attacker to bypass the configured rules and allow emails that should have been denied to flow through an affected device.

This vulnerability is due to improper handling of email that passes through an affected device. An attacker could exploit this vulnerability by sending a crafted email through the affected device. A successful exploit could allow the attacker to bypass email filters on the affected device.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

17
  • Cisco Systems, Inc./Secure Email Gateway16 versions
    cpe:2.3:a:cisco:secure_email_gateway:13.0.0-392:*:*:*:*:*:*:*+ 15 more
    • cpe:2.3:a:cisco:secure_email_gateway:13.0.0-392:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_email_gateway:13.0.5-007:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_email_gateway:13.5.1-277:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_email_gateway:13.5.4-038:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_email_gateway:14.0.0-698:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_email_gateway:14.2.0-620:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_email_gateway:14.2.1-020:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_email_gateway:14.3.0-032:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_email_gateway:15.0.0-104:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_email_gateway:15.0.1-030:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_email_gateway:15.0.3-002:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_email_gateway:15.5.0-048:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_email_gateway:15.5.1-055:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_email_gateway:15.5.2-018:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_email_gateway:16.0.0-050:*:*:*:*:*:*:*
    • (no CPE)
  • Cisco Systems, Inc./Secure Acscpe-rescue
    Range: 14.0.0-698

Patches

Vulnerability mechanics

References

1

News mentions

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