How severe is CVE-2020-35873?

CVE-2020-35873 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-35873 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-35873?

CVE-2020-35873 affects Rusqlite Project Rusqlite. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-35873?

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

When was CVE-2020-35873 published?

CVE-2020-35873 was published on 2020-12-31 and last updated on 2026-06-17.

CVE-2020-35873

CVE-2020-35873 is a critical-severity vulnerability in Rusqlite Project Rusqlite with a CVSS 3.x base score of 9.8. 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-416.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-416
Affected product: Rusqlite Project Rusqlite
Published: 2020-12-31
Last modified: 2026-06-17

Description

An issue was discovered in the rusqlite crate before 0.23.0 for Rust. Memory safety can be violated because sessions.rs has a use-after-free.

Frequently asked questions

What is CVE-2020-35873?: An issue was discovered in the rusqlite crate before 0.23.0 for Rust. Memory safety can be violated because sessions.rs has a use-after-free.
How severe is CVE-2020-35873?: CVE-2020-35873 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-35873 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-35873?: CVE-2020-35873 affects Rusqlite Project Rusqlite. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-35873?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-35873 published?: CVE-2020-35873 was published on 2020-12-31 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:rusqlite_project:rusqlite:*:*:*:*:*:rust:*:*

More vulnerabilities in Rusqlite Project Rusqlite

CVE-2020-35872 — Critical (CVSS 9.8): An issue was discovered in the rusqlite crate before 0.23.0 for Rust. Memory safety can be violated via the repr(Rust)…
CVE-2020-35870 — Critical (CVSS 9.8): An issue was discovered in the rusqlite crate before 0.23.0 for Rust. Memory safety can be violated via an Auxdata API…
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CVE-2020-35867 — Critical (CVSS 9.8): An issue was discovered in the rusqlite crate before 0.23.0 for Rust. Memory safety can be violated via create_module.
CVE-2020-35866 — Critical (CVSS 9.8): An issue was discovered in the rusqlite crate before 0.23.0 for Rust. Memory safety can be violated via VTab /…

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Other CWE-416 (Use After Free) vulnerabilities

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CVE-2026-4725 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149…
CVE-2026-4688 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox…
CVE-2025-24085 — Critical (CVSS 10.0): A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.3 and iPadOS 18.3,…
CVE-2024-43102 — Critical (CVSS 10.0): Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of…
CVE-2021-32495 — Critical (CVSS 10.0): Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function. Attacker can read freed memory…

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