CVE-2021-26788 Denial of service in n/a
An attacker can cause a denial of service in CycloneTCP by sending a maliciously crafted TCP packet to the target system.
- 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-2021-26788?
CVE-2021-26788 is a high-severity denial of service vulnerability in n/a, published on 8 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Oryx Embedded CycloneTCP 1.7.6 to 2.0.0, fixed in 2.0.2, is affected by incorrect input validation, which may cause a denial of service (DoS). To exploit the vulnerability, an attacker needs to have TCP connectivity to the target system. Receiving a maliciously crafted TCP packet from an unauthenticated endpoint is sufficient to trigger the bug.
Weakness: CWE-20
Which versions are affected by CVE-2021-26788?
It affects 1 product.
Products include Oryx-Embedded Cyclonetcp.
How do I fix CVE-2021-26788?
No fix has been published for CVE-2021-26788 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-2021-26788 being exploited?
There is no known exploitation of CVE-2021-26788 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-284q-vmqr-cv75.