CVE-2026-84411
published 2026-10-02CVE-2026-84411: The web management service in affected RouterOS versions contains an integer underflow in its HTTP request body handling that is reachable before…
PriorityP267critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
0.95%
59.7th percentile
The web management service in affected RouterOS versions contains an integer underflow in its HTTP request body handling that is reachable before authentication. This can be leveraged by an unauthenticated network attacker to achieve arbitrary code execution as root, or to cause a denial of service, using a single crafted request.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mikrotik | routeros | < 7.24 | 7.24 |
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv4.09.3CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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VulDB
MikroTik RouterOS up to 7.23 Web Management Service integer underflow
vuldb·2026-10-03·CVSS 9.8
CVE-2026-84411 [CRITICAL] MikroTik RouterOS up to 7.23 Web Management Service integer underflow
A vulnerability, which was classified as very critical, was found in MikroTik RouterOS up to 7.23. This vulnerability affects unknown code of the component Web Management Service. Such manipulation leads to integer underflow.
This vulnerability is referenced as CVE-2026-84411. It is possible to launch the attack remotely. No exploit is available.
You should upgrade the affected component.
GHSA
The web management service in affected RouterOS versions contains an integer underflow in its HTTP request body handling that is reachable before authentication.
ghsa_unreviewed·2026-10-03
CVE-2026-84411 [CRITICAL] CWE-191 The web management service in affected RouterOS versions contains an integer underflow in its HTTP request body handling that is reachable before authentication.
The web management service in affected RouterOS versions contains an integer underflow in its HTTP request body handling that is reachable before authentication. This can be leveraged by an unauthenticated network attacker to achieve arbitrary code execution as root, or to cause a denial of service, using a single crafted request.
No detection rules found.
No public exploits indexed.
2026-10-02
Published