Vulnerability · Published May 2, 2026 · Assigned by VulDB

CVE-2026-7668MikroTik RouterOS SCEP Endpoint scep.p ASN1_STRING_data out-of-bounds

High 7.3

In plain English

A high-severity out-of-bounds read in RouterOS from MikroTik. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities).

Severity (CVSS 3.1)7.3High

Exploit odds (30 days)0.3%top 77.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

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."

Affected products (as reported)

Vendor	Product	Versions
MikroTik	RouterOS	6.49.8

Weakness: CWE-125, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C

References

VDB-360804 | MikroTik RouterOS SCEP Endpoint scep.p ASN1_STRING_data out-of-bounds vdb-entry, technical-description
VDB-360804 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #798623 | MikroTik RouterOS 6.49.8 Out-of-Bounds Read third-party-advisory
https://github.com/ezio315/cve/issues/4 exploit, issue-tracking