The Array.prototype.concat implementation in builtins.cc in Google V8, as used in Google Chrome before 49.0.2623.108, does not properly cons
The Array.prototype.concat implementation in builtins.cc in Google V8, as used in Google Chrome before 49.0.2623.108, does not properly consider element data types, which allows remote attackers to cause a denial of service (out-of-bounds read) or possibly have unspecified other impact via crafted JavaScript code.
- Published
- Mar 29, 2016
- Updated
- Jun 16, 2026
- EPSS
- 48.1% · 99th percentile
- CWE
- CWE-125
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Report tools
Action score
79
This week
Don’t wait for the next maintenance window.
- CVSS
- 35 / 40 · 8.8 / 10
- CISA KEV
- 30 / 30 · Listed
- EPSS
- 14 / 30 · 48.1%
CISA SSVC decision
- Exploitation
- active
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
Actively exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on Jun 8, 2022. That signals real attacks, not theory.
Remediation deadline for government agencies: Jun 22, 2022.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| chrome | cpe:2.3:a:google:chrome | |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
| canonical | ubuntu linux | cpe:2.3:o:canonical:ubuntu_linux |
| suse | package hub | cpe:2.3:a:suse:package_hub |
| opensuse | leap | cpe:2.3:o:opensuse:leap |
| opensuse | opensuse | cpe:2.3:o:opensuse:opensuse |
| redhat | enterprise linux desktop | cpe:2.3:o:redhat:enterprise_linux_desktop |
| redhat | enterprise linux eus | cpe:2.3:o:redhat:enterprise_linux_eus |
| redhat | enterprise linux server | cpe:2.3:o:redhat:enterprise_linux_server |
| redhat | enterprise linux workstation | cpe:2.3:o:redhat:enterprise_linux_workstation |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- canonical ubuntu linux14.04
- canonical ubuntu linux15.10
- canonical ubuntu linux16.04
- debian debian linux8.0
- debian debian linux9.0
- google chromebefore 49.0.2623.108
- opensuse leap42.1
- opensuse opensuse13.1
- redhat enterprise linux desktop6.0
- redhat enterprise linux eus6.7
- redhat enterprise linux server6.0
- redhat enterprise linux workstation6.0
- suse package huball versions
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:8 | chromium-browser | before 49.0.2623.108-1~deb8u1 | 49.0.2623.108-1~deb8u1 |
| Red Hat:rhel_extras:6 | chromium-browser | before 0:49.0.2623.108-1.el6 | 0:49.0.2623.108-1.el6 |
| Red Hat:rhel_extras:6 | chromium-browser-debuginfo | before 0:49.0.2623.108-1.el6 | 0:49.0.2623.108-1.el6 |
Same product
google: all recordsOther highest-scoring records for the same primary product.
- CVE-2023-4863Heap buffer overflow in libwebp in Google Chrome prior to 116.0.5845.187 and libwebp 1.3.2 allowed a remote attacker to perform an out of boKEV95Now
- CVE-2021-21224Type confusion in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker to execute arbitrary code inside a sandbox via a craftKEV90Now
- CVE-2018-17463Incorrect side effect annotation in V8 in Google Chrome prior to 70.0.3538.64 allowed a remote attacker to execute arbitrary code inside a sKEV90Now
- CVE-2020-6418Type confusion in V8 in Google Chrome prior to 80.0.3987.122 allowed a remote attacker to potentially exploit heap corruption via a crafted KEV89Now
- CVE-2022-2294Heap buffer overflow in WebRTC in Google Chrome prior to 103.0.5060.114 allowed a remote attacker to potentially exploit heap corruption viaKEV86Now
- CVE-2021-21220Insufficient validation of untrusted input in V8 in Google Chrome prior to 89.0.4389.128 allowed a remote attacker to potentially exploit heKEV86Now
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:chromium-browser | 49.0.2623.108-1~deb8u1 · Debian:8 | Package registry (OSV) |
| red hat:chromium-browser | 0:49.0.2623.108-1.el6 · Red Hat:rhel_extras:6 | Package registry (OSV) |
| red hat:chromium-browser-debuginfo | 0:49.0.2623.108-1.el6 · Red Hat:rhel_extras:6 | Package registry (OSV) |
Exploit status
Weaponized
A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Published
- CISA KEV+2262 d
- TodaySep 30, 2026+3837 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- A user must open a link or visit a page.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-125 · Out-of-bounds ReadCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- googlechromereleases.blogspot.com/2016/03/stable-channel-update_24.html
- lists.opensuse.org/opensuse-security-announce/2016-04/msg00000.html
- lists.opensuse.org/opensuse-security-announce/2016-04/msg00001.html
- lists.opensuse.org/opensuse-security-announce/2016-04/msg00039.html
- rhn.redhat.com/errata/RHSA-2016-0525.html
- www.debian.org/security/2016/dsa-3531
- www.securitytracker.com/id/1035423
- www.ubuntu.com/usn/USN-2955-1
- codereview.chromium.org/1804963002/
- security.gentoo.org/glsa/201605-02
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-1646
Vendor advisories and official records. Exploit/PoC links are deliberately left out.