CVE-2023-30800 MikroTik RouterOS Web Interface Heap Corruption
Remote unauthenticated attackers can crash the MikroTik RouterOS web interface via heap corruption, causing a denial of service.
- 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-2023-30800?
CVE-2023-30800 is a high-severity memory corruption vulnerability in Mikrotik Routeros, published on 7 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The web server used by MikroTik RouterOS version 6 is affected by a heap memory corruption issue. A remote and unauthenticated attacker can corrupt the server's heap memory by sending a crafted HTTP request. As a result, the web interface crashes and is immediately restarted. The issue was fixed in RouterOS 6.49.10 stable. RouterOS version 7 is not affected.
Weakness: CWE-787
Which versions are affected by CVE-2023-30800?
It affects 1 product.
Products include Mikrotik Routeros.
How do I fix CVE-2023-30800?
No fix has been published for CVE-2023-30800 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2023-30800 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-30800 exists.
Public exploit code: 3 proofs of concept on GitHub.
Other vulnerabilities in Mikrotik Routeros
- CVE-2018-7445 MikroTik RouterOS Stack-Based Buffer Overflow
- CVE-2026-86060 MikroTik RouterOS Improper Neutralization of Argument Delimiters in a Command
- CVE-2018-14847 MikroTik Router OS Directory Traversal
- CVE-2026-67277 MikroTik RouterOS Missing Authentication for Critical Function
- CVE-2026-67279 Mikrotik RouterOS Improper Enforcement of Behavioral Workflow
Sources
Also known as GHSA-pmjf-334r-5j9j.