TI-2021-00856 Aliases CVE-2021-1129 GHSA-36mf-q7m2-w6vp

Cisco Email Security Appliance, Cisco Content Security Management Appliance, and Cisco…

LOW 32CWE-201Published 2021-01-20 · Updated 2024-11-12

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-201.

Summary

A vulnerability in the authentication for the general purpose APIs implementation of Cisco Email Security Appliance (ESA), Cisco Content Security Management Appliance (SMA), and Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to access general system information and certain configuration information from an affected device. The vulnerability exists because a secure authentication token is not required when authenticating to the general purpose API. An attacker could exploit this vulnerability by sending a crafted request for information to the general purpose API on an affected device. A successful exploit could allow the attacker to obtain system and configuration information from the affected device, resulting in an unauthorized information disclosure.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01156 67th 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 · 3

CPE	Versions	Role	Vendor
cpe:2.3:a:cisco:content_security_management_appliance:12.5.0:::::::*	12.5.0	Vulnerable	Cisco
cpe:2.3:a:cisco:email_security_appliance:13.0.0:::::::*	13.0.0	Vulnerable	Cisco
cpe:2.3:a:cisco:web_security_appliance:11.8.0:::::::*	11.8.0	Vulnerable	Cisco

cpe:2.3:a:cisco:content_security_management_appliance:12.5.0:*:*:*:*:*:*:* Versions 12.5.0 Vulnerable ·Cisco
cpe:2.3:a:cisco:email_security_appliance:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·Cisco
cpe:2.3:a:cisco:web_security_appliance:11.8.0:*:*:*:*:*:*:* Versions 11.8.0 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-1129
2026-10-03 Alias added: GHSA-36mf-q7m2-w6vp

References

Advisory 1

20210120 Cisco Email Security Appliance, Cisco Content Security Management Appliance, and Cisco Web Security Appliance Information Disclosure Vulnerability

TI-2016-01993 The DES and Triple DES ciphers, as used in the TLS, SSH, and IPSec protocols and other… CVSS 3.1HIGH 7.5
TI-2014-01669 The End User Safelist/Blocklist (aka SLBL) service in Cisco AsyncOS Software for Email… CVSS 2.0HIGH 8.5
TI-2015-05308 Cisco AsyncOS before 8.5.7-042, 9.x before 9.1.0-032, 9.1.x before 9.1.1-023, and 9.5.x… CVSS 2.0HIGH 7.8
TI-2013-04730 The web framework on Cisco Web Security Appliance (WSA), Email Security Appliance (ESA)… CVSS 2.0HIGH 7.8
TI-2019-01602 Cisco Email Security Appliance and Cisco Content Security Management Appliance Denial of Service Vulnerability CVSS 3.1MEDIUM 5.3
TI-2020-02726 Cisco ESA, Cisco WSA, and Cisco SMA GUI Denial of Service Vulnerability CVSS 3.1MEDIUM 5.3

See all 26 →

Sources

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