CVE-2020-36205

lowpriority · track · 22EPSS 0.004 · 35 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.41% (35th) EPSS

CVSS 2.1 · low

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · osv · nvd

EPSS · scored 2026-10-27

An issue was discovered in the xcb crate through 2020-12-10 for Rust. base::Error does not have soundness. Because of the public ptr field, a use-after-free or double-free can occur.

cvss

Technical severity, 0–10. One row per scoring source.

5.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 2.1–5.5

v2.02.1lowAV:L/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 3.9 · impact 2.9

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 3.6

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV

v3.15.1mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-415USprimaryCWE-416USprimaryCWE-415USCWE-416US

affected products (4)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
xcb project xcb≤ 2020-12-10nvdUScpe:2.3:a:xcb_project:xcb:*:*:*:*:*:*:*:*
crates.io xcb< 1.0.0osvUSpkg:cargo/xcb
crates.io xcb0.0.0-0 → 1.0.0osvUSpkg:cargo/xcb

advisories (2)

Vendor and ecosystem advisories describing this.

GHSA-c8hq-x4mm-p6q6Memory handling issues in xcb2021-08-25ghsa · osvUS
An issue was discovered in the xcb crate through 2020-12-10 for Rust. base::Error does not have soundness. Because of the public ptr field, a use-after-free or double-free can occur.
RUSTSEC-2020-0097Soundness issue with base::Error2020-12-10vendor · osvUS
`base::Error` type contains public field named `ptr`. With this definition, it is possible to create a `base::Error` with an invalid pointer and trigger memory safety errors such as use-after-free or double-free with safe Rust. The users of `xcb` crate are advised not to manipulate the field.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv nvd NVD CVE.org MITRE

published 2021-01-26modified 2026-06-17

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+13296 more

references (4)

External citations — patches, advisories, analysis.

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