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CVE-2020-35860

NULL Pointer Dereference in cbox

9.8 Critical

An issue was discovered in the cbox crate through 2020-03-19 for Rust. The CBox API allows dereferencing raw pointers without a requirement for unsafe code.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

1.65%Up 1.2 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 9.8

An issue was discovered in the cbox crate through 2020-03-19 for Rust. The CBox API allows dereferencing raw pointers without a requirement for unsafe code.

Record
CVE-2020-35860
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-476
Updated
2026-11-02
CVE List No score

An issue was discovered in the cbox crate through 2020-03-19 for Rust. The CBox API allows dereferencing raw pointers without a requirement for unsafe code.

Record
CVE-2020-35860
Updated
2026-11-02
EUVDEUVD-2021-1550 No score

An issue was discovered in the cbox crate through 2020-03-19 for Rust. The CBox API allows dereferencing raw pointers without a requirement for unsafe code.

Record
EUVD-2021-1550
Updated
2026-11-03
GitHub AdvisoriesGHSA-3vjm-36rr-7qrq 9.8

NULL Pointer Dereference in cbox

An issue was discovered in the cbox crate through 2020-03-19 for Rust. The CBox API allows dereferencing raw pointers without a requirement for unsafe code.

Record
GHSA-3vjm-36rr-7qrq
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-476
Updated
2026-11-02
OSVGHSA-3vjm-36rr-7qrq 9.8

NULL Pointer Dereference in cbox

An issue was discovered in the cbox crate through 2020-03-19 for Rust. The CBox API allows dereferencing raw pointers without a requirement for unsafe code.

Record
GHSA-3vjm-36rr-7qrq
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-476
Updated
2026-11-02
OSVRUSTSEC-2020-0005 9.8

CBox API allows to de-reference raw pointers without `unsafe` code

CBox and CSemiBox are part of the public API of the cbox crate and they allow to create smart pointers from raw pointers and de-reference them without the need of unsafe code.

Record
RUSTSEC-2020-0005
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
cbox
crates.io
through 0.3.0 None known
cbox
crates.io
0.0.0-0 and later None known

History

History
RecordedChangedSources
facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-35860 is a critical vulnerability (CVSS 9.8) in Cbox Project Cbox, published March 19, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.65%, the 76th percentile. No source names a fixed version.

References

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