How severe is CVE-2021-31245?

CVE-2021-31245 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-31245 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-31245?

CVE-2021-31245 affects Openmptcprouter. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-31245?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-31245 published?

CVE-2021-31245 was published on 2021-05-06 and last updated on 2026-06-17.

CVE-2021-31245

CVE-2021-31245 is a medium-severity vulnerability in Openmptcprouter with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Openmptcprouter
Published: 2021-05-06
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2021-31245?: 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.
How severe is CVE-2021-31245?: CVE-2021-31245 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-31245 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-31245?: CVE-2021-31245 affects Openmptcprouter. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-31245?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-31245 published?: CVE-2021-31245 was published on 2021-05-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:openmptcprouter:openmptcprouter:*:*:*:*:*:*:*:*

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