TI-2022-05234 Aliases CVE-2022-20675 GHSA-hw6v-rjm4-5m34

Multiple Cisco Security Products Simple Network Management Protocol Service Denial of Service Vulnerability

LOW 33CWE-248Published 2022-04-06 · Updated 2024-11-06

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · Low
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-248.

Summary

A vulnerability in the TCP/IP stack of Cisco Email Security Appliance (ESA), Cisco Web Security Appliance (WSA), and Cisco Secure Email and Web Manager, formerly Security Management Appliance, could allow an unauthenticated, remote attacker to crash the Simple Network Management Protocol (SNMP) service, resulting in a denial of service (DoS) condition. This vulnerability is due to an open port listener on TCP port 199. An attacker could exploit this vulnerability by connecting to TCP port 199. A successful exploit could allow the attacker to crash the SNMP service, resulting in a DoS condition.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01292 70th 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: None
Automatable: Yes
Technical impact: Partial

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Cisco	Cisco Web Security Appliance (WSA)	all versions	—	No fix listed	CNA

Cisco Web Security Appliance (WSA) VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 6

CPE	Versions	Role	Vendor
cpe:2.3:o:cisco:asyncos::::::::	14.0 to before 14.02.0-020	Vulnerable	Cisco
cpe:2.3:h:cisco:email_security_appliance:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:o:cisco:asyncos::::::::	12.5 to before 14.1.0-239	Vulnerable	Cisco
cpe:2.3:h:cisco:secure_email_and_web_manager:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:o:cisco:asyncos::::::::	12.0 to before 14.0.2-012	Vulnerable	Cisco
cpe:2.3:h:cisco:web_security_appliance:-:::::::*	not specified by NVD	Running on	Cisco

cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:* Versions 14.0 to before 14.02.0-020 Vulnerable ·Cisco
cpe:2.3:h:cisco:email_security_appliance:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:* Versions 12.5 to before 14.1.0-239 Vulnerable ·Cisco
cpe:2.3:h:cisco:secure_email_and_web_manager:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:* Versions 12.0 to before 14.0.2-012 Vulnerable ·Cisco
cpe:2.3:h:cisco:web_security_appliance:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2022-20675
2026-10-03 Alias added: GHSA-hw6v-rjm4-5m34

References

Advisory 1

20220406 Multiple Cisco Security Products Simple Network Management Protocol Service Denial of Service Vulnerability

TI-2026-74174 Arbitrary file write in Cisco Secure Email Gateway via AMP feature KEVCVSS 3.1CRITICAL 9.8
TI-2026-53489 Cisco Secure Email Gateway SQL Injection Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2025-14683 Cisco Secure Email Gateway and Cisco Secure Email and Web Manager Remote Command Execution Vulnerability KEVCVSS 3.1CRITICAL 10.0
TI-2021-13698 Cisco Web Security Appliance Proxy Service Denial of Service Vulnerability CVSS 3.1HIGH 8.6
TI-2018-11020 Cisco Email Security Appliance URL Filtering Denial of Service Vulnerability CVSS 3.1HIGH 8.6
TI-2019-01567 Cisco Email Security Appliance Denial of Service Vulnerability CVSS 3.1HIGH 8.6

See all 55 →

Sources

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