Remote denial of service in Cisco Secure Endpoint connectors

1) Heap-based buffer overflow

EUVDB-ID: #VU103240

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-20128

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error when decrypting OLE2 file format. A remote attacker can pass a specially crafted file to the application, trigger a heap-based buffer overflow and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Secure Endpoint Connector for Linux: before 1.25.1

Secure Endpoint Connector for Mac: before 1.24.4

Secure Endpoint Connector for Windows: before 7.5.20

Secure Endpoint Private Cloud: before 4.2.0

CPE2.3

• cpe:2.3:a:cisco_systems:secure_endpoint_connector_for_linux:*:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:secure_endpoint_connector_for_mac:*:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:secure_endpoint_connector_for_windows:*:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:secure_endpoint_private_cloud:*:*:*:*:*:*:*:*

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-ole2-H549rphA

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.