CVE-2023-30800: high-severity vulnerability in MikroTik RouterOS
MikroTik RouterOS Web Interface Heap Corruption
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 1.7%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
MikroTik · RouterOSRelated CVEs — MikroTik RouterOS
In the same product, most dangerous first.
CVE-2019-3943—CVE-2019-3943EPSS 3.7%CVE-2023-30799CRITICALMikroTik RouterOS Administrator Privilege EscalationEPSS 1.4%CVE-2025-10948HIGHMikroTik RouterOS libjson.so print parse_json_element buffer overflowEPSS 1.0%CVE-2026-84411CRITICALMikroTik RouterOS Integer UnderflowEPSS 0.9%CVE-2025-6563MEDIUMCross-site scripting via dst parameter in RouterOS WiFi hotspotEPSS 0.7%CVE-2026-89028HIGHMikroTik RouterOS < 7.24 Heap Corruption via SMB1 SessionSetupAndXEPSS 0.6%