CVE-2026-7668 MikroTik RouterOS SCEP Endpoint scep.p ASN1_STRING_data out-of-bounds
Remote attackers can trigger an out-of-bounds read in the SCEP endpoint, potentially exposing memory or causing a crash.
- 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-2026-7668?
CVE-2026-7668 is a medium-severity memory corruption vulnerability in MikroTik RouterOS, published on 2 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was identified in MikroTik RouterOS 6.49.8. This vulnerability affects the function ASN1_STRING_data in the library nova/lib/www/scep.p of the component SCEP Endpoint. The manipulation of the argument transactionID/messageType leads to out-of-bounds read. The attack may be initiated remotely. The exploit is publicly available and might be used. You should upgrade the affected component. The vendor recommends to "use the latest v6.x or 7.x MikroTik RouterOS version, the reported issue should be fixed there."
Which versions are affected by CVE-2026-7668?
How do I fix CVE-2026-7668?
No fix has been published for CVE-2026-7668 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-2026-7668 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7668 exists.
Sources
Also known as GHSA-fqc2-7xh3-488w.