CVE-2021-21156
Heap buffer overflow in V8 in Google Chrome prior to 88.0.4324.182 allowed a remote attacker to potentially exploit heap corruption via a crafted script.
02 Description
Heap buffer overflow in V8 in Google Chrome prior to 88.0.4324.182 allowed a remote attacker to potentially exploit heap corruption via a crafted script.
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 2.70% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 85.6% of scored records. A rank, not a probability.
- NVD base score
- 8.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-02-22 21:20Z5 YR AGO
- Last updated
- 2024-08-03 18:01Z2 YR AGO
- Reserved
- 2020-12-21
- Assigning CNA
- Chrome
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-787Out-of-bounds WriteBase
- Data version
- 5.1
- Document digest
- 396db4b4a4bc2f6031823ff1a8e45699d3ad8649a22b7212c4cac2b4364e5f5d
05 Affected products
06 References
- chromereleases.googleblog.comhttps://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_16.html
- crbug.comhttps://crbug.com/1177341
- lists.fedoraproject.orgFEDORA-2021-aa764a8531https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BI6ZIJQYP5DFMYVX4J5OGOU2NQLEZ3SB/
- lists.fedoraproject.orgFEDORA-2021-c88a96bd4bhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FE5SIKEVYTMDCC5OSXGOM2KRPYLHYMQX/
- security.gentoo.orgGLSA-202104-08https://security.gentoo.org/glsa/202104-08
- packetstormsecurity.comhttp://packetstormsecurity.com/files/162579/Chrome-Array-Transfer-Bypass.html
07 Fixed in
Arch Linux
- chromium Fixed in 88.0.4324.182-1
- vivaldi Fixed in 3.6.2165.40-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 12
- chromium Fixed in 88.0.4324.182-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- chromium Fixed in 88.0.4324.182-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- chromium Fixed in 88.0.4324.182-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- chromium-browser Fixed in 89.0.4389.82-0ubuntu0.16.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- chromium-browser Fixed in 89.0.4389.82-0ubuntu0.18.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.