How severe is CVE-2019-19766?

CVE-2019-19766 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2019-19766 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-19766?

CVE-2019-19766 affects Bitwarden Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-19766?

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-2019-19766 published?

CVE-2019-19766 was published on 2019-12-12 and last updated on 2026-06-17.

CVE-2019-19766

CVE-2019-19766 is a high-severity vulnerability in Bitwarden Server with a CVSS 3.x base score of 7.5. 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-916.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-916
Affected product: Bitwarden Server
Published: 2019-12-12
Last modified: 2026-06-17

Description

The Bitwarden server through 1.32.0 has a potentially unwanted KDF.

Frequently asked questions

What is CVE-2019-19766?: The Bitwarden server through 1.32.0 has a potentially unwanted KDF.
How severe is CVE-2019-19766?: CVE-2019-19766 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2019-19766 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-19766?: CVE-2019-19766 affects Bitwarden Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-19766?: 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-2019-19766 published?: CVE-2019-19766 was published on 2019-12-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:bitwarden:server:*:*:*:*:*:*:*:*

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