How severe is CVE-2021-43766?

CVE-2021-43766 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-43766 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-43766?

CVE-2021-43766 affects Odyssey Project Odyssey. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-43766?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-43766 published?

CVE-2021-43766 was published on 2022-08-25 and last updated on 2026-06-17.

CVE-2021-43766

CVE-2021-43766 is a high-severity vulnerability in Odyssey Project Odyssey with a CVSS 3.x base score of 8.1. 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-295.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-295
Affected product: Odyssey Project Odyssey
Published: 2022-08-25
Last modified: 2026-06-17

Description

Odyssey passes to server unencrypted bytes from man-in-the-middle When Odyssey is configured to use certificate Common Name for client authentication, a man-in-the-middle attacker can inject arbitrary SQL queries when a connection is first established, despite the use of SSL certificate verification and encryption. This is similar to CVE-2021-23214 for PostgreSQL.

Frequently asked questions

What is CVE-2021-43766?: Odyssey passes to server unencrypted bytes from man-in-the-middle When Odyssey is configured to use certificate Common Name for client authentication, a man-in-the-middle attacker can inject arbitrary SQL queries when a connection is first established, despite the use of SSL certificate verification and encryption. This is similar to CVE-2021-23214 for PostgreSQL.
How severe is CVE-2021-43766?: CVE-2021-43766 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-43766 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-43766?: CVE-2021-43766 affects Odyssey Project Odyssey. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-43766?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-43766 published?: CVE-2021-43766 was published on 2022-08-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:odyssey_project:odyssey:1.1:*:*:*:*:*:*:*

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