CVE-2021-30904
CVE-2021-30904 is a medium-severity vulnerability in Apple Macos with a CVSS 3.x base score of 5.3. 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-662.
Key facts
- Severity: Medium (CVSS 3.x base score 5.3)
- CVSS v2: 5.0
- EPSS exploit prediction: 1% (52nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-662
- Affected product: Apple Macos
- Published:
- Last modified:
Description
A sync issue was addressed with improved state validation. This issue is fixed in macOS Monterey 12.0.1. A user's messages may continue to sync after the user has signed out of iMessage.
Frequently asked questions
- What is CVE-2021-30904?
- A sync issue was addressed with improved state validation. This issue is fixed in macOS Monterey 12.0.1. A user's messages may continue to sync after the user has signed out of iMessage.
- How severe is CVE-2021-30904?
- CVE-2021-30904 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
- Is CVE-2021-30904 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-30904?
- CVE-2021-30904 affects Apple Macos. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-30904?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-30904 published?
- CVE-2021-30904 was published on 2021-08-24 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
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