CVE-2021-21148
HighExploitedPublic exploitHeap buffer overflow in V8 in Google Chrome prior to 88.0.4324.150 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Published Dec 15, 2021 · Updated Aug 4, 2026 · Also known as ALPINE-CVE-2021-21148, DEBIAN-CVE-2021-21148, DSA-4858-1, TR-21-0735, TR-21-1000, UBUNTU-CVE-2021-21148
Key Facts
Patch immediately- CVE-2021-21148 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Chrome (Google), Debian Linux, Fedora (Fedoraproject) and 22 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jan 24, 2021. Public exploit code is available.
- EPSS estimates a 20% probability of exploitation in the next 30 days.
- Fixed versions are available, including Chrome 88.0.4324.150, chromedriver 88.0.4324.150-bp152.2.59.1, chromedriver 88.0.4324.150-lp152.2.72.1.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
20%
Higher than 97.4% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2021-21148 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
Heap buffer overflow in V8 in Google Chrome prior to 88.0.4324.150 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Nov 3, 2021 | Nov 17, 2021 | Not reported |
| Industry KEV feed | Jan 24, 2021 | Nov 17, 2021 | Not reported |
| CIRCL KEV | Nov 3, 2021 | Nov 17, 2021 | Not reported |
| ENISA EUVD | Nov 3, 2021 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
88 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| ChromeGoogle | >= unspecified | 88.0.4324.150 |
| Debian LinuxDebian | 10.0 | n/a |
| FedoraFedoraproject | 32, 33 | n/a |
| chromiumarch | See advisory | 88.0.4324.150-1 |
| operaarch | See advisory | 74.0.3911.107-1 |
Patched Releases
Chrome
88.0.4324.150
chromedriver
88.0.4324.150-bp152.2.59.1, 88.0.4324.150-lp152.2.72.1, 93.0.4577.82-1.1
chromium
88.0.4324.150-1, 88.0.4324.150-bp152.2.59.1, 88.0.4324.150-lp152.2.72.1, 88.0.4324.182-1~deb10u1, 93.0.4577.82-1.1
chromium-browser
89.0.4389.82-0ubuntu0.16.04.1, 89.0.4389.82-0ubuntu0.18.04.1
libqt5-qtpdf-devel
5.15.3-bp152.3.3.1, 5.15.3-lp152.3.3.4, 5.15.6-2.1
libqt5-qtpdf-examples
5.15.3-bp152.3.3.1, 5.15.3-lp152.3.3.4, 5.15.6-2.1
libqt5-qtpdf-imports
5.15.3-bp152.3.3.1, 5.15.3-lp152.3.3.4, 5.15.6-2.1
libqt5-qtpdf-private-headers-devel
5.15.3-bp152.3.3.1, 5.15.3-lp152.3.3.4, 5.15.6-2.1
libqt5-qtwebengine
5.15.3-bp152.3.3.1, 5.15.3-lp152.3.3.4, 5.15.6-2.1
libqt5-qtwebengine-devel
5.15.3-bp152.3.3.1, 5.15.3-lp152.3.3.4, 5.15.6-2.1
libqt5-qtwebengine-examples
5.15.3-bp152.3.3.1, 5.15.3-lp152.3.3.4, 5.15.6-2.1
libqt5-qtwebengine-private-headers-devel
5.15.3-bp152.3.3.1, 5.15.3-lp152.3.3.4, 5.15.6-2.1
libQt5Pdf5
5.15.3-bp152.3.3.1, 5.15.3-lp152.3.3.4, 5.15.6-2.1
libQt5PdfWidgets5
5.15.3-bp152.3.3.1, 5.15.3-lp152.3.3.4, 5.15.6-2.1
nodejs
14.15.5-r0
nodejs14
14.17.5-1.2
nodejs14-devel
14.17.5-1.2
nodejs14-docs
14.17.5-1.2
npm14
14.17.5-1.2
opera
74.0.3911.107-1, 74.0.3911.107-lp152.2.34.1, 74.0.3911.203-lp152.2.37.1
qt5-qtwebengine
5.15.3_git20200401-r0
ungoogled-chromium
113.0.5672.92-1.1
ungoogled-chromium-chromedriver
113.0.5672.92-1.1
vivaldi
3.6.2165.36-1
Timeline
Added to Industry KEV feed
Jan 24, 2021
Added to CISA KEV
Nov 3, 2021
Added to CIRCL KEV
Nov 3, 2021
Added to ENISA EUVD
Nov 3, 2021
Publicly disclosed
Dec 15, 2021
Last updated
Aug 4, 2026
Weakness Type
- CWE-787 Out-of-bounds Write
References
- advisoryhttp://packetstormsecurity.com/files/162579/Chrome-Array-Transfer-Bypass.html
- advisoryhttps://chromereleases.googleblog.com/2021/03/stable-channel-update-for-desktop_12.html
- advisoryhttps://chromereleases.googleblog.com/2021/12/stable-channel-update-for-desktop_13.html
- advisoryhttps://gbhackers.com/google-zero-day-vulnerability/
- advisoryhttps://indianexpress.com/article/technology/tech-news-technology/google-chrome-releases-emergency-update-to-fix-multiple-security-vulnerabilities-7673638/
FAQ
Common Questions.
Heap buffer overflow in V8 in Google Chrome prior to 88.0.4324.150 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Affected: Chrome (Google) versions >= unspecified; Debian Linux versions 10.0; Fedora (Fedoraproject) versions 32, 33, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jan 24, 2021.
Yes. It was added on Nov 3, 2021 with a federal remediation due date of Nov 17, 2021.
Public exploit code is available.
Fixed versions are available, including Chrome 88.0.4324.150, chromedriver 88.0.4324.150-bp152.2.59.1, chromedriver 88.0.4324.150-lp152.2.72.1.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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