Critical

CISA Adds Two Known Exploited Vulnerabilities to Catalog

All CISA Advisories
Actively Exploited

Overview

The Cybersecurity and Infrastructure Security Agency (CISA) has added two new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, indicating that they are currently being exploited by attackers. The vulnerabilities include CVE-2026-76460, which affects Cisco Identity Services Engine due to incorrect use of privileged APIs, and CVE-2026-87886, related to incorrect default permissions in Acronis Backup. These vulnerabilities pose significant risks, especially for federal agencies, which are required to prioritize their remediation under CISA's Binding Operational Directive 26-04. While this directive applies specifically to Federal Civilian Executive Branch agencies, CISA encourages all organizations to adopt similar risk-based practices to handle vulnerabilities effectively. Organizations are urged to check for potential compromises before applying patches to ensure their systems remain secure.

Key Takeaways

  • Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
  • Affected Systems: Cisco Identity Services Engine (CVE-2026-76460), Acronis Backup (CVE-2026-87886)
  • Action Required: Federal agencies must prioritize rapid remediation of these vulnerabilities, specifically for publicly exposed assets.
  • Timeline: Newly disclosed

Original Article Summary

CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2026-76460 Cisco Identity Services Engine Incorrect Use of Privileged APIs Vulnerability CVE-2026-87886 Acronis Backup Incorrect Default Permissions Vulnerability These types of vulnerabilities are a frequent attack vector for malicious cyber actors and pose significant risks to the federal enterprise. Binding Operational Directive (BOD) 26-04: Prioritizing Security Updates Based on Risk establishes vulnerability management requirements for Federal Civilian Executive Branch (FCEB) agencies. BOD 26-04 reinforces the importance of the KEV Catalog and requires federal agencies to prioritize rapid remediation of high-risk vulnerabilities, specifically those identified by Common Vulnerabilities and Exposures (CVEs) listed in CISA’s KEV Catalog on publicly exposed assets that grant total control of the asset post-exploitation, while deferring action for lower-risk vulnerabilities. BOD 26-04 further establishes basic expectations for when agencies must check whether threat actors compromised the system before the patch was applied. While BOD 26-04 applies only to FCEB agencies, CISA encourages all organizations to adopt risk-based vulnerability management and prioritize remediation of KEV Catalog vulnerabilities. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria. Aware of an exploited vulnerability not currently listed in the KEV Catalog? Submit it for potential addition through CISA’s KEV Nomination Form. Potential KEV additions must have a CVE ID, evidence of exploitation, and clear mitigation guidance.

Impact

Cisco Identity Services Engine (CVE-2026-76460), Acronis Backup (CVE-2026-87886)

Exploitation Status

This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.

Timeline

Newly disclosed

Remediation

Federal agencies must prioritize rapid remediation of these vulnerabilities, specifically for publicly exposed assets. Organizations should check for compromises before applying patches. Specific patches or updates were not mentioned.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to CVE, Cisco, Vulnerability, and 1 more.

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