CVE-2021-1855
First published: Mon Apr 26 2021(Updated: )
A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.3. A malicious website may be able to force unnecessary network connections to fetch its favicon.
Credit: product-security@apple.com Håvard Mikkelsen Ottestad HASMAC AS
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Apple macOS Big Sur | <11.3 | 11.3 |
| Apple macOS | >=11.0<11.3 |
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Reference Links
- https://support.apple.com/en-us/HT212325 (Advisory)
Peer vulnerabilities
(Found alongside the following vulnerabilities)
- CVE-2021-1853
- CVE-2021-1849
- CVE-2021-1867
- CVE-2021-1810
- CVE-2021-1808
- CVE-2021-1857
- CVE-2021-30752
- CVE-2021-30664
- CVE-2021-1846
- CVE-2021-1809
- CVE-2021-30659
- CVE-2021-1847
- CVE-2021-1811
- CVE-2020-8284
- CVE-2020-8286
- CVE-2020-8285
- CVE-2021-1784
- CVE-2021-1872
- CVE-2021-1881
- CVE-2021-1882
- CVE-2021-1813
- CVE-2021-1883
- CVE-2021-1884
- CVE-2021-1880
- CVE-2021-30653
- CVE-2021-1814
- CVE-2021-1843
- CVE-2021-1885
- CVE-2021-1858
- CVE-2021-30743
- CVE-2021-30658
- CVE-2021-1841
- CVE-2021-1834
- CVE-2021-1860
- CVE-2021-1840
- CVE-2021-1851
- CVE-2021-1832
- CVE-2021-30660
- CVE-2021-30652
- CVE-2021-1875
- CVE-2021-1824
- CVE-2021-1859
- CVE-2021-1876
- CVE-2021-1815
- CVE-2021-1739
- CVE-2021-1740
- CVE-2021-1861
- CVE-2021-1855
- CVE-2021-1868
- CVE-2021-30750
- CVE-2021-1878
- CVE-2021-30657
- CVE-2021-30856
- CVE-2020-8037
- CVE-2021-1839
- CVE-2021-1825
- CVE-2021-1817
- CVE-2021-1826
- CVE-2021-1820
- CVE-2021-30661
- CVE-2020-7463
- CVE-2021-1828
- CVE-2021-1829
- CVE-2021-30655
- CVE-2021-1770
- CVE-2021-1873
Frequently Asked Questions
What is CVE-2021-1855?
CVE-2021-1855 is a vulnerability in Safari that was addressed with improved state management.
How does CVE-2021-1855 impact Apple macOS Big Sur 11.3?
CVE-2021-1855 affects Apple macOS Big Sur 11.3.
Is there a fix available for CVE-2021-1855?
Yes, the vulnerability has been addressed in Apple macOS Big Sur 11.3.
Where can I find more information about CVE-2021-1855?
You can find more information about CVE-2021-1855 on the Apple support website.
- collector/nvd-index
- agent/type
- agent/softwarecombine
- agent/first-publish-date
- collector/apple-support
- agent/software-canonical-lookup-request
- collector/mitre-cve
- source/MITRE
- agent/author
- agent/last-modified-date
- agent/references
- agent/severity
- agent/tags
- agent/description
- agent/event
- agent/trending
- vendor/apple
- canonical/apple macos
- version/apple macos/11.0
- canonical/apple macos big sur