How severe is CVE-2021-1226?

CVE-2021-1226 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2021-1226 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-1226?

CVE-2021-1226 primarily affects Cisco Emergency Responder. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-1226?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-1226 published?

CVE-2021-1226 was published on 2021-01-13 and last updated on 2026-06-17.

CVE-2021-1226

CVE-2021-1226 is a medium-severity vulnerability in Cisco Emergency Responder with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-532.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.0
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-532
Affected product: Cisco Emergency Responder
Published: 2021-01-13
Last modified: 2026-06-17

Description

A vulnerability in the audit logging component of Cisco Unified Communications Manager, Cisco Unified Communications Manager Session Management Edition, Cisco Unified Communications Manager IM & Presence Service, Cisco Unity Connection, Cisco Emergency Responder, and Cisco Prime License Manager could allow an authenticated, remote attacker to view sensitive information in clear text on an affected system. The vulnerability is due to the storage of certain unencrypted credentials. An attacker could exploit this vulnerability by accessing the audit logs on an affected system and obtaining credentials that they may not normally have access to. A successful exploit could allow the attacker to use those credentials to discover and manage network devices.

Frequently asked questions

What is CVE-2021-1226?: A vulnerability in the audit logging component of Cisco Unified Communications Manager, Cisco Unified Communications Manager Session Management Edition, Cisco Unified Communications Manager IM & Presence Service, Cisco Unity Connection, Cisco Emergency Responder, and Cisco Prime License Manager could allow an authenticated, remote attacker to view sensitive information in clear text on an affected system. The vulnerability is due to the storage of certain unencrypted credentials. An attacker could exploit this vulnerability by accessing the audit logs on an affected system and obtaining credentials that they may not normally have access to. A successful exploit could allow the attacker to use those credentials to discover and manage network devices.
How severe is CVE-2021-1226?: CVE-2021-1226 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-1226 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-1226?: CVE-2021-1226 primarily affects Cisco Emergency Responder. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-1226?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-1226 published?: CVE-2021-1226 was published on 2021-01-13 and last updated on 2026-06-17.

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-logging-6QSWKRYz

Affected products (15)

cpe:2.3:a:cisco:emergency_responder:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:emergency_responder:10.5\(2\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:emergency_responder:11.5\(1\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:emergency_responder:12.0\(1\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:prime_license_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:prime_license_manager:10.5\(2\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:-:*:*:*
cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:session_management:*:*:*
cpe:2.3:a:cisco:unified_communications_manager:10.5\(2\):*:*:*:-:*:*:*
cpe:2.3:a:cisco:unified_communications_manager:10.5\(2\):*:*:*:session_management:*:*:*
cpe:2.3:a:cisco:unified_communications_manager_im_\&_presence_service:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_communications_manager_im_\&_presence_service:10.5\(2\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_communications_manager_im_\&_presence_service:12.0\(1\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:10.5\(2\):*:*:*:*:*:*:*

More vulnerabilities in Cisco Emergency Responder

CVE-2021-44228 — Critical (CVSS 10.0): Apache Log4j2 2.0-beta9 through 2.15.0 (excluding security releases 2.12.2, 2.12.3, and 2.3.1) JNDI features used in…
CVE-2008-1154 — Critical (CVSS 10.0): The Disaster Recovery Framework (DRF) master server in Cisco Unified Communications products, including Unified…
CVE-2004-1760 — Critical (CVSS 10.0): The default installation of Cisco voice products, when running the IBM Director Agent on IBM servers before OS…
CVE-2023-20101 — Critical (CVSS 9.8): A vulnerability in Cisco Emergency Responder could allow an unauthenticated, remote attacker to log in to an affected…
CVE-2017-12337 — Critical (CVSS 9.8): A vulnerability in the upgrade mechanism of Cisco collaboration products based on the Cisco Voice Operating System…
CVE-2016-6468 — High (CVSS 8.8): A vulnerability in the web-based management interface of Cisco Emergency Responder could allow an unauthenticated,…

All CVEs affecting Cisco Emergency Responder →

Other CWE-532 (Insertion of Sensitive Information into Log File) vulnerabilities

CVE-2022-36407 — Critical (CVSS 9.9): Insertion of Sensitive Information into Log File vulnerability in Hitachi Virtual Storage Platform, Hitachi Virtual…
CVE-2023-40029 — Critical (CVSS 9.9): Argo CD is a declarative continuous deployment for Kubernetes. Argo CD Cluster secrets might be managed declaratively…
CVE-2021-32724 — Critical (CVSS 9.9): check-spelling is a github action which provides CI spell checking. In affected versions and for a repository with the…
CVE-2026-49200 — Critical (CVSS 9.8): The acer_cgi.log file in the device firmware is accessible without authentication via the web interface. This file…
CVE-2026-22778 — Critical (CVSS 9.8): vLLM is an inference and serving engine for large language models (LLMs). From 0.8.3 to before 0.14.1, when an invalid…
CVE-2025-11008 — Critical (CVSS 9.8): The CE21 Suite plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and…

Browse all CWE-532 (Insertion of Sensitive Information into Log File) vulnerabilities →