CVE-2026-20643

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.35% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 28.4% of scored records. A rank, not a probability.

NVD base score

5.4 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-03-17 22:29Z5 MO AGO

Last updated

2026-08-17 21:30Z17 DAYS AGO

Reserved

2025-11-11

Assigning CNA

apple

Record state

PUBLISHED

Severity

Medium (CVSS 5.4)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Weaknesses

• CWE-20Improper Input ValidationClass
• CWE-346Origin Validation ErrorClass

Data version

5.2

Document digest

1dc3df9d83b619718b85991eacfeca6b4aebd229eaf6fea26db66a43ad5f2538

• support.apple.comhttps://support.apple.com/en-us/126604
• support.apple.comhttps://support.apple.com/en-us/126792
• support.apple.comhttps://support.apple.com/en-us/126793
• support.apple.comhttps://support.apple.com/en-us/126794
• support.apple.comhttps://support.apple.com/en-us/126799
• support.apple.comhttps://support.apple.com/en-us/126800
• seclists.orghttp://seclists.org/fulldisclosure/2026/Mar/10