VDB
CVE-2021-30663
CVE-2021-30663
PUBLISHED
CVSS 7.8 HIGH
Reported by apple · Published September 8, 2021
An integer overflow was addressed with improved input validation. This issue is fixed in iOS 14.5.1 and iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, Safari 14.1.1, macOS Big Sur 11.3.1. Processing maliciously crafted web content may lead to arbitrary code execution.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| wpewebkit | Arch Linux | 2.32.3-1 |
| webkitgtk4-devel | Amazon Linux | 2.38.5-3.amzn2.0.1 |
| webkitgtk4-jsc | Amazon Linux | 2.38.5-3.amzn2.0.1 |
| webkitgtk4 | Amazon Linux | 2.38.5-3.amzn2.0.1 |
| webkitgtk4-jsc-devel | Amazon Linux | 2.38.5-3.amzn2.0.1 |
| webkit2gtk | Alpine | 2.32.3-r0 |
| macOS | Apple | 14.6, 14.5, 14.1, 12.5, 11.3.1, 11.3 |
| iphone_os | apple | 14.5.1, 12.5.3 |
| safari | apple | 14.1.1 |
| webkit2gtk | Ubuntu:20.04:LTS | 2.32.3-0ubuntu0.20.04.1 |
| tvos | apple | 14.6 |
| webkit2gtk | Ubuntu:18.04:LTS | 2.32.3-0ubuntu0.18.04.1 |
1 more packages have a fixed version. See every fix in Lookup.
Risk scores
CVSS 3.1
7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Apple | macOS | unspecified |
| Apple | macOS | unspecified |
| Apple | macOS | unspecified |
| Apple | macOS | unspecified |
| Apple | macOS | unspecified |
| Apple | macOS | *, *, * |
| arch | wpewebkit | 0 |
| amazon:2 | webkitgtk4-devel | 0 |
| amazon:2 | webkitgtk4-jsc | 0 |
| amazon:2 | webkitgtk4 | 0 |
| amazon:2 | webkitgtk4-jsc-devel | 0 |
| alpine | webkit2gtk | 0 |
Timeline
- May 3, 2021 VulnCheck KEV Exploitation (4 in total, the first dated here)
- May 3, 2021 PoC Published
- May 4, 2021 CVE Published
- Sep 9, 2021 EPSS Score (30 in total, the first dated here)
- Nov 3, 2021 CISA KEV Added
- Oct 21, 2025 CVE Updated
- Mar 7, 2026 Distribution Patch (3 in total, the first dated here)
- Mar 7, 2026 Security Advisory (10 in total, the first dated here)
- Aug 3, 2026 Coalition ESS Score
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2021-30663
vulnetix vdb fixes CVE-2021-30663Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2021-30663/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart
References
- x_refsource_MISC
- x_refsource_MISC
- x_refsource_MISC
- x_refsource_MISC
- x_refsource_MISC
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30663 advisory