CVE-2021-45482
CVE-2021-45482 is a medium-severity vulnerability in Webkitgtk with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-416.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v2: 4.3
- EPSS exploit prediction: 1% (70th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-416
- Affected product: Webkitgtk
- Published:
- Last modified:
Description
In WebKitGTK before 2.32.4, there is a use-after-free in WebCore::ContainerNode::firstChild, a different vulnerability than CVE-2021-30889.
Frequently asked questions
- What is CVE-2021-45482?
- In WebKitGTK before 2.32.4, there is a use-after-free in WebCore::ContainerNode::firstChild, a different vulnerability than CVE-2021-30889.
- How severe is CVE-2021-45482?
- CVE-2021-45482 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2021-45482 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-45482?
- CVE-2021-45482 affects Webkitgtk. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-45482?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-45482 published?
- CVE-2021-45482 was published on 2021-12-25 and last updated on 2026-06-17.
References
- http://www.openwall.com/lists/oss-security/2022/01/21/2
- https://github.com/ChijinZ/security_advisories/tree/master/webkitgtk-2.32.3
Affected products (1)
- cpe:2.3:a:webkitgtk:webkitgtk:*:*:*:*:*:*:*:*
More vulnerabilities in Webkitgtk
- CVE-2020-13753 — Critical (CVSS 10.0): The bubblewrap sandbox of WebKitGTK and WPE WebKit, prior to 2.28.3, failed to properly block access to CLONE_NEWUSER…
- CVE-2010-3119 — Critical (CVSS 10.0): Google Chrome before 5.0.375.127 and webkitgtk before 1.2.6 do not properly support the Ruby language, which allows…
- CVE-2010-3116 — Critical (CVSS 10.0): Multiple use-after-free vulnerabilities in WebKit, as used in Apple Safari before 4.1.3 and 5.0.x before 5.0.3, Google…
- CVE-2010-3114 — Critical (CVSS 10.0): The text-editing implementation in Google Chrome before 5.0.375.127, and webkitgtk before 1.2.6, does not check a node…
- CVE-2010-3113 — Critical (CVSS 10.0): Google Chrome before 5.0.375.127, and webkitgtk before 1.2.5, does not properly handle SVG documents, which allows…
- CVE-2025-43343 — Critical (CVSS 9.8): The issue was addressed with improved memory handling. This issue is fixed in Safari 26, iOS 26 and iPadOS 26, macOS…
All CVEs affecting Webkitgtk →
Other CWE-416 (Use After Free) vulnerabilities
- CVE-2026-13782 — Critical (CVSS 10.0): Use after free in Browser in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the…
- CVE-2026-4725 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149…
- CVE-2026-4688 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox…
- CVE-2025-24085 — Critical (CVSS 10.0): A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.3 and iPadOS 18.3,…
- CVE-2024-43102 — Critical (CVSS 10.0): Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of…
- CVE-2021-32495 — Critical (CVSS 10.0): Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function. Attacker can read freed memory…