CVE-2026-103903

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.41% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 35.4% of scored records. A rank, not a probability.

NVD base score

8.7 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-10-16.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-10-12 10:37Z17 DAYS AGO

Last updated

2026-10-13 11:57Z16 DAYS AGO

Reserved

2026-10-01

Assigning CNA

ENISA

Record state

PUBLISHED

Severity

High (CVSS 8.7)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Weaknesses

• CWE-863Incorrect AuthorizationClass

Data version

5.2

Document digest

c0553ddf2b12c496d7df191afb8654bbe2baecd697668c7cf0289631221237a8

• mikrotik.comMikroTik RouterOS 7.24.5 stable release noteshttps://mikrotik.com/download/changelogs?channelFilter=stable&versionFilter=7.24.5release-notes
• forum.mikrotik.comhttps://forum.mikrotik.com/t/7-25rc1-testing-is-released/27352release-notes
• br2sec.comhttps://br2sec.com/lv/resursi/2026-routeros-winbox-auth-bypass/technical-descriptionthird-party-advisory
• cvd.cert.lvhttps://cvd.cert.lv/disclosed/vuln-all-709639748government-resource