CVE-2021-21128: google chrome Out-of-bounds Write
CVSS: 8.8v3.1HighModified
AliasesUBUNTU-CVE-2021-21128DEBIAN-CVE-2021-21128
Published 09-02-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-21128 is a high (CVSS 8.8) Out-of-bounds Write vulnerability in google chrome. EPSS estimates a 6.51% chance of exploitation in the next 30 days, higher than 93.7% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
8.8/10
010
High · v3.1 (NVD)EPSS score
6.51%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 10 · Related 8Timeline
- 09-02-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
Heap buffer overflow in Blink in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 8.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Medium 6.8Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
6.51%
Chance of exploitation in the next 30 days
Percentile
94%
Versus all other CVEs
30-day change
0.00 pp
From 6.51% on 20-09-2026
20-09-202620-10-2026
EPSS score6.51%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (crbug.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Debian1 product
- chromium< 88.0.4324.96-0.1
Google1 product
- chrome≥ unspecified, < 88.0.4324.96 | < 88.0.4324.96
Microsoft1 product
- edge_chromium< 88.0.705.50
Ubuntu1 product
- chromium-browser< 89.0.4389.82-0ubuntu0.16.04.1 | < 89.0.4389.82-0ubuntu0.18.04.1
4 vendors · 4 products
References
6 links- chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_19.htmlX Refsource MISCRelease NotesVendor Advisory
msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21128X Refsource MISCThird Party Advisory