CVE-2026-34182: CMS AuthEnvelopedData Processing May Accept Forged Messages
CSIRTS triage
- What
- The vulnerability may allow CMS AuthEnvelopedData processing to accept forged messages.
- Who is affected
- Deployments using CMS for AuthEnvelopedData processing.
- Urgency
- Remediation is critical urgency due to the critical severity rating.
- Action
- Apply the latest patches for CMS.
AI-assisted analysis generated from the source advisory — verify against the original.
Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34182
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-341820.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-34182 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- high[UPDATE] [high] OpenSSL: Multiple Vulnerabilitiescert-bund
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