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AWS acm documentation change

Service: acm · 2026-02-22 · Documentation low

File: acm/latest/userguide/email-validation.md

Summary

Updated certificate validity period from 13 months (395 days) to 198 days

Security assessment

Shorter certificate validity period reduces exposure window for compromised certificates but doesn't address a specific vulnerability. No evidence of security incident remediation.

Diff

diff --git a/acm/latest/userguide/email-validation.md b/acm/latest/userguide/email-validation.md
index d74b57f64..79b6c6175 100644
--- a//acm/latest/userguide/email-validation.md
+++ b//acm/latest/userguide/email-validation.md
@@ -57 +57 @@ Observe the following considerations about email validation.
-ACM certificates are valid for 13 months (395 days). Renewing a certificate requires action by the domain owner. ACM begins sending renewal notices to the email addresses associated with the domain 45 days before expiration. The notifications contain a link that the domain owner can click for renewal. Once all listed domains are validated, ACM issues a renewed certificate with the same ARN.
+ACM certificates are valid for 198 days. Renewing a certificate requires action by the domain owner. ACM begins sending renewal notices to the email addresses associated with the domain 45 days before expiration. The notifications contain a link that the domain owner can click for renewal. Once all listed domains are validated, ACM issues a renewed certificate with the same ARN.