CVE-2008-1743 Denial of service in n/a
Remote attackers can cause denial of service in Cisco Unified Communications Manager via malformed TCP packets, leading to memory consumption and service interruption.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2008-1743?
CVE-2008-1743 is a high-severity denial of service vulnerability in Cisco Unified Communications Manager, published on 16 May 2008. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Memory leak in the Certificate Trust List (CTL) Provider service in Cisco Unified Communications Manager (CUCM) 5.x before 5.1(3) and 6.x before 6.1(1) allows remote attackers to cause a denial of service (memory consumption and service interruption) via a series of malformed TCP packets, aka Bug ID CSCsi98433.
Weakness: CWE-399
Which versions are affected by CVE-2008-1743?
It affects 1 product.
Products include Cisco Unified Communications Manager.
How do I fix CVE-2008-1743?
No fix has been published for CVE-2008-1743 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2008-1743 being exploited?
There is no known exploitation of CVE-2008-1743 in the wild and no public exploit code.
Other vulnerabilities in Cisco Unified Communications Manager
- CVE-2026-20230 Cisco Unified Communications Manager Server-Side Request Forgery (SSRF)
- CVE-2026-20045 Cisco Unified Communications Products Code Injection
- CVE-2025-20309 Cisco Unified Communications Manager Static SSH Credentials Vulnerability
- CVE-2011-1643 Information disclosure in n/a
- CVE-2024-20253 Deserialization in Cisco Packaged Contact Center Enterprise
Sources
Also known as GHSA-vcf6-rqgx-fhj7.