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CVE-2021-31245

19
FAUCET Score

CVE-2021-31245 describes a timing attack vulnerability in omr-admin.py of openmptcprouter-vps-admin version 0.57.3 and earlier. This flaw allows remote attackers to guess user passwords due to a length-dependent comparison mechanism. With a CVSS score of 5.9 (Medium), this vulnerability has a network attack vector and high attack complexity, potentially leading to high confidentiality impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.57.3CPE matchmatch criteria
cpe:2.3:a:openmptcprouter:openmptcprouter:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.09%
Probability of exploitation in next 30 days
EPSS Percentile
79.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0209 is in the 66th percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / Ysurac/openmptcprouter-vps-admin
Third Party Advisory
github.com / Ysurac/openmptcprouter-vps-admin/commit/a01cbc8c3d3b8bb7720bf3ff234671b4c0e1859c
PatchThird Party Advisory
medium.com / d3crypt/timing-attack-on-openmptcprouter-vps-admin-authentication-cve-2021-31245-12dd92303e1
ExploitPatchThird Party Advisory
openmptcprouter.com
Vendor Advisory