CVE-2020-36465: An issue was discovered in the generic-array crate before 0.13.3 for Rust

This week

HIGH 7.5REMOTEUPGRADE

CVE-2020-36465 is a high-severity flaw (CVSS 7.5) affecting generic-array. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in the generic-array crate before 0.13.3 for Rust. It violates soundness by using the arr! macro to extend lifetimes.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Published	2021-08-08
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: generic-array project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-08-08 06:15 UTCPublished CVE record published
2026-06-17 03:15 UTCUpdated Record last modified

generic-array project generic-array UPGRADE

Affected: >= 0.8.0 and < 0.8.4 · >= 0.9.0 and < 0.9.1 · >= 0.10.0 and < 0.10.1 · >= 0.11.0 and < 0.11.2 · >= 0.12.0 and < 0.12.4 · >= 0.13.0 and < 0.13.3

Fixed in: 0.8.4, 0.9.1, 0.10.1, 0.11.2, 0.12.4, 0.13.3

Safe to downgrade to: a release before 0.8.0

1. Check installed version

apt-cache policy generic-array || rpm -q generic-array || generic-array --version

2. UPGRADE to 0.8.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade generic-array

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade generic-array

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 0.8.0 (Debian / Ubuntu)

apt-cache madison generic-array sudo apt install generic-array=<VERSION_BEFORE_0.8.0> sudo apt-mark hold generic-array

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list generic-array sudo dnf downgrade generic-array-<VERSION_BEFORE_0.8.0> sudo dnf versionlock add generic-array

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-36465?

generic-array: upgrade to 0.8.4, 0.9.1, 0.10.1, 0.11.2, 0.12.4, 0.13.3. Exact commands for each OS are on this page.

Is CVE-2020-36465 being exploited?

CVE-2020-36465 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-36465 affect?

CVE-2020-36465 affects generic-array. Severity is high (CVSS 7.5). An issue was discovered in the generic-array crate before 0.13.3 for Rust. It violates soundness by using the arr! macro to extend lifetimes.

How urgent is CVE-2020-36465?

Priority 54/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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