CVE-2026-84411
The web management service in affected RouterOS versions contains an integer underflow in its HTTP…
- Risk score
- 76/100
- CVSS
- 9.8 v3.1
- Exploit chance (30 days)
- 0.9%
- Published
- 2 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 cra…
- Affected
- See advisory
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Amber
- CVSS 9.8 critical
- Remotely exploitable without logging in
References
Original description
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.
Last activity 2 Oct 2026. Patch Forecast updates every hour.