CVE-2021-31245

5.9 mediumEPSS 2.1%

Medium (5.9) in openmptcprouter openmptcprouter. EPSS 2.1% chance of exploitation in the next 30 days.

omr-admin.py in openmptcprouter-vps-admin 0.57.3 and earlier compares the user provided password with the original password in a length dependent manner, which allows remote attackers to guess the password via a timing attack.

Severity

CVSS 3.1

5.9 medium

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS: 2.1% chance of exploitation in the next 30 days; higher than 81% of CVEs (scores of 2026-10-31)
CWE: CWE-287
Published: 2021-05-06
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

openmptcprouter:openmptcprouter

References

https://github.com/Ysurac/openmptcprouter-vps-admin
https://github.com/Ysurac/openmptcprouter-vps-admin/commit/a01cbc8c3d3b8bb7720bf3ff234671b4c0e1859c#diff-b89ee68e63302a732d4bde35eb04a205b06f1611147e139642356f173195ab80
https://medium.com/d3crypt/timing-attack-on-openmptcprouter-vps-admin-authentication-cve-2021-31245-12dd92303e1
https://www.openmptcprouter.com/
https://github.com/Ysurac/openmptcprouter-vps-admin

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