CVE-2015-4293 Denial of service in n/a
Remote attackers can cause denial of service via fragmented IPv4 or IPv6 packets in Cisco IOS XE, leading to CPU consumption or packet loss.
- 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-2015-4293?
CVE-2015-4293 is a medium-severity denial of service vulnerability in Cisco Ios Xe, published on 30 Jul 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The packet-reassembly implementation in Cisco IOS XE 3.13S and earlier allows remote attackers to cause a denial of service (CPU consumption or packet loss) via fragmented (1) IPv4 or (2) IPv6 packets that trigger ATTN-3-SYNC_TIMEOUT errors after reassembly failures, aka Bug ID CSCuo37957.
Weakness: CWE-399
Which versions are affected by CVE-2015-4293?
It affects 1 product.
Products include Cisco Ios Xe.
How do I fix CVE-2015-4293?
No fix has been published for CVE-2015-4293 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-2015-4293 being exploited?
There is no known exploitation of CVE-2015-4293 in the wild and no public exploit code.
Other vulnerabilities in Cisco Ios Xe
- CVE-2023-20198 Cisco IOS XE Web UI Privilege Escalation
- CVE-2018-0151 Cisco IOS Software and Cisco IOS XE Software Quality of Service Remote Code Execution
- CVE-2023-20273 Cisco IOS XE Web UI Command Injection
- CVE-2025-20188 Hardcoded credentials in Cisco IOS XE Software
- CVE-2021-34770 Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Remote Code Execution Vulnerability
Sources
Also known as GHSA-v8cg-fx28-fcq5.