How severe is CVE-2023-37365?

CVE-2023-37365 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-37365 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-37365?

CVE-2023-37365 affects Hnswlib Project Hnswlib. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-37365?

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

When was CVE-2023-37365 published?

CVE-2023-37365 was published on 2023-06-30 and last updated on 2026-06-17.

CVE-2023-37365

CVE-2023-37365 is a medium-severity vulnerability in Hnswlib Project Hnswlib with a CVSS 3.x base score of 6.5. 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-415.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-415
Affected product: Hnswlib Project Hnswlib
Published: 2023-06-30
Last modified: 2026-06-17

Description

Hnswlib 0.7.0 has a double free in init_index when the M argument is a large integer.

Frequently asked questions

What is CVE-2023-37365?: Hnswlib 0.7.0 has a double free in init_index when the M argument is a large integer.
How severe is CVE-2023-37365?: CVE-2023-37365 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-37365 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-37365?: CVE-2023-37365 affects Hnswlib Project Hnswlib. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-37365?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-37365 published?: CVE-2023-37365 was published on 2023-06-30 and last updated on 2026-06-17.

References

https://github.com/nmslib/hnswlib/issues/467

Affected products (1)

cpe:2.3:a:hnswlib_project:hnswlib:0.7.0:*:*:*:*:*:*:*

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