CVE-2026-20673 json
A logic issue was addressed with improved checks.
published 8mo ago modified 4mo ago also EUVD-2026-5922
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 28%
- public exploits
- 0
- none known
Summary
A logic issue was addressed with improved checks. This issue is fixed in iOS 18.7.5 and iPadOS 18.7.5, macOS Sequoia 15.7.4, macOS Sonoma 14.8.4, macOS Tahoe 26.3. Turning off "Load remote content in messages” may not apply to all mail previews.
Patch / fix
- Apple iOS and iPadOS 18.7.5
- Apple macOS 14.8.4, 15.7.4, 26.3
Is CVE-2026-20673 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 8mo ago
Exploit prediction
0.34% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
Affected products
- Apple iOS and iPadOS
- Apple macOS
References
-
support.apple.com
/en-us/126347
release-notes, vendor-advisory
-
support.apple.com
/en-us/126348
release-notes, vendor-advisory
-
support.apple.com
/en-us/126349
release-notes, vendor-advisory
-
support.apple.com
/en-us/126350
release-notes, vendor-advisory
Sources
- CVE List CVE-2026-20673
- NVD CVE-2026-20673
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.