How severe is CVE-2020-25576?

CVE-2020-25576 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-2020-25576 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-25576?

CVE-2020-25576 affects Rand Project Rand. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-25576?

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-2020-25576 published?

CVE-2020-25576 was published on 2020-09-14 and last updated on 2026-06-17.

CVE-2020-25576

CVE-2020-25576 is a critical-severity vulnerability in Rand Project Rand 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-704.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-704
Affected product: Rand Project Rand
Published: 2020-09-14
Last modified: 2026-06-17

Description

An issue was discovered in the rand_core crate before 0.4.2 for Rust. Casting of byte slices to integer slices mishandles alignment constraints.

Frequently asked questions

What is CVE-2020-25576?: An issue was discovered in the rand_core crate before 0.4.2 for Rust. Casting of byte slices to integer slices mishandles alignment constraints.
How severe is CVE-2020-25576?: CVE-2020-25576 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-2020-25576 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-25576?: CVE-2020-25576 affects Rand Project Rand. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-25576?: 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-2020-25576 published?: CVE-2020-25576 was published on 2020-09-14 and last updated on 2026-06-17.

References

https://rustsec.org/advisories/RUSTSEC-2019-0035.html

Affected products (1)

cpe:2.3:a:rand_project:rand:*:*:*:*:*:*:*:*

Other CWE-704 (Incorrect Type Conversion or Cast) vulnerabilities

CVE-2015-3120 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.302 and 14.x through 18.x before 18.0.0.203 on Windows and OS X and before…
CVE-2025-41648 — Critical (CVSS 9.8): An unauthenticated remote attacker can bypass the login to the web application of the affected devices making it…
CVE-2025-41646 — Critical (CVSS 9.8): An unauthorized remote attacker can bypass the authentication of the affected software package by misusing an incorrect…
CVE-2021-33318 — Critical (CVSS 9.8): An Input Validation Vulnerability exists in Joel Christner .NET C# packages WatsonWebserver, IpMatcher 1.0.4.1 and…
CVE-2020-6151 — Critical (CVSS 9.8): A memory corruption vulnerability exists in the TIFF handle_COMPRESSION_PACKBITS functionality of Accusoft ImageGear…
CVE-2011-2337 — Critical (CVSS 9.8): A wrong type is used for a return value from strlen in WebKit in Google Chrome before Blink M12 on 64-bit platforms.

Browse all CWE-704 (Incorrect Type Conversion or Cast) vulnerabilities →