MikroTik RouterOS SCEP Endpoint scep.p ASN1_STRING_data out-of-bounds
Published May 2, 2026
6.9
MEDIUMCVSS 4.0
EPSS 0.50%
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
-
- Version 6.49.8StatusaffectedConstraints-
- Version
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
1 other source (NVD) ▾
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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
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
1 other source (NVD) ▾
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C
1 other source (NVD) ▾
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
YesTechnical Impact
PartialDecision
n/aAssessed May 4, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
May–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.50% (0.00498) | 40.42th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.30% (0.00300) | 21.38th | v5 (v2026.06.15) |
| May 3, 2026 | 0.04% (0.00039) | 11.58th | v4 (v2025.03.14) |
References (4)
- https://github.com/ezio315/cve/issues/4 exploitissue-tracking
- https://vuldb.com/submit/798623 third-party-advisory
- https://vuldb.com/vuln/360804 vdb-entrytechnical-description
- https://vuldb.com/vuln/360804/cti signaturepermissions-required
| Link | Providers | Tags |
|---|---|---|
| https://github.com/ezio315/cve/issues/4 | exploitissue-tracking | |
| https://vuldb.com/submit/798623 | third-party-advisory | |
| https://vuldb.com/vuln/360804 | vdb-entrytechnical-description | |
| https://vuldb.com/vuln/360804/cti | signaturepermissions-required |
Change history (0)
No recorded changes yet.