Your RSA-2048 keys break in 2030. Find every one of them before attackers do.

CVE-2020-36452

CRITICAL

CVE-2020-36452 is a critical-severity (CVSS 9.8) CWE-908 vulnerability in array-tools_project array-tools. O3 Security detects and blocks CVE-2020-36452 exploitation at runtime via eBPF exploit-chain detection and L7 egress monitoring, even on unpatched systems.

An issue was discovered in the array-tools crate before 0.3.2 for Rust. FixedCapacityDequeLike::clone() has a drop of uninitialized memory.

Published
Aug 8, 2021
Updated
Jun 17, 2026
Affected
1 product
Patched
See advisory
Exploits
None indexed

Description

An issue was discovered in the array-tools crate before 0.3.2 for Rust. FixedCapacityDequeLike::clone() has a drop of uninitialized memory.

Affected Products

1 product · 1 configurations
Application
array-toolsarray-tools_project
< 0.3.2
range

Detection & mitigation playbook

Vendor / appliance
  1. Detect

    Inventory every array-tools_project array-tools deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for exploitation at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.

  2. Fix

    Apply the array-tools_project array-tools security patch or hotfix for CVE-2020-36452 on the affected version, following the vendor advisory for your exact build.

  3. Workarounds

    Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.

  4. How O3 protects you

    O3 detects and blocks CVE-2020-36452 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.

Tailored to CVE-2020-36452. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

An issue was discovered in the array-tools crate before 0.3.2 for Rust. FixedCapacityDequeLike::clone() has a drop of uninitialized memory.
O3 Security · Runtime Protection

Is CVE-2020-36452 being exploited in your environment?

O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2020-36452 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.