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CVE-2021-21140
Uninitialized use in USB in Google Chrome prior to 88.0.4324.96 allowed a local attacker to potentially perform out of bounds memory…
Medium6.8EPSS 0.77%
- Published
- Updated
- Reserved
- Assigned by
- Chrome
Description
Uninitialized use in USB in Google Chrome prior to 88.0.4324.96 allowed a local attacker to potentially perform out of bounds memory access via via a USB device.
Timeline
ID reserved
By Chrome
- 50 days later
· 50 days later
Published
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium6.8 | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.77% · top 44% of all CVEs (7 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.
Weakness
- Uninitialized Use
- CWE-119 (opens in a new tab)All about CWE-119 and its CVEs
Affected products
References (3)
- https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_19.html (opens in a new tab)x_refsource_MISCx_transferred
- https://crbug.com/1136327 (opens in a new tab)x_refsource_MISCx_transferred
- https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21140 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2021-21140)Record last updated .