What is CVE-2026-78002?

CVE-2026-78002 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. Rsyslog: rsyslog: denial of service via heap buffer overflow in rainerscript replace() function

Which CVE IDs does CVE-2026-78002 cover?

CVE-2026-78002 covers the following CVE IDs: CVE-2026-78002. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-78002?

CVE-2026-78002 has a CVSS v3 base score of 7.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-78002?

CVE-2026-78002 affects 3 products, including: azl3 rsyslog 8.2308.0-5 on Azure Linux 3.0; azl3 rsyslog 8.2308.0-6 on Azure Linux 3.0; azl3 rsyslog 8.2308.0-7 on Azure Linux 3.0.

CVE-2026-78002MediumCVSS 7.5

Rsyslog: rsyslog: denial of service via heap buffer overflow in rainerscript replace() function

Vendor

Microsoft Security Response Center (MSRC)

Published

September 2, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-78002 →

🎯 Affected products3

azl3 rsyslog 8.2308.0-5 on Azure Linux 3.0
azl3 rsyslog 8.2308.0-6 on Azure Linux 3.0
azl3 rsyslog 8.2308.0-7 on Azure Linux 3.0

✅ Remediation

Security Update KBRelease Notes (Security Update) — fixed build 8.2308.0-7 Security Update — fixed build 8.2308.0-7

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78002
patchhttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade