PatchTheCVECVE-2020-36451: An issue was discovered in the rcu_cell crate through 2020-11-14 for Rust
CVE-2020-36451 is a high-severity flaw (CVSS 8.1) affecting rcu cell. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
An issue was discovered in the rcu_cell crate through 2020-11-14 for Rust. There are unconditional implementations of Send and Sync for RcuCell<T>.
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 | 8.1 (High) |
| Attack vector | Network (remote) |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.2% (top 31%) |
| CISA exploited list | No |
| Weakness | CWE-77 |
| Published | 2021-08-08 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
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-2020-36451?
rcu cell: upgrade to newer than 2020-11-14. Exact commands for each OS are on this page.
Is CVE-2020-36451 being exploited?
CVE-2020-36451 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-2020-36451 affect?
CVE-2020-36451 affects rcu cell. Severity is high (CVSS 8.1). An issue was discovered in the rcu_cell crate through 2020-11-14 for Rust. There are unconditional implementations of Send and Sync for RcuCell<T>.
How urgent is CVE-2020-36451?
Priority 56/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action