CRITICAL 9.9 Microsoft PoC
CVE-2025-49844
Redis Lua Use-After-Free may lead to remote code execution
Microsoft Security Update 2025-Oct: Redis Lua Use-After-Free may lead to remote code execution
Affected Products
- cbl2 redis 6.2.18-3 on CBL Mariner 2.0
- azl3 valkey 8.0.4-1 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49844
- https://nvd.nist.gov/vuln/detail/CVE-2025-49844
This critical severity vulnerability with a CVSS score of 9.9 was published on 2025-10-14 via Microsoft. 🚨 A public proof-of-concept exploit is available on GitHub. EPSS score: 82.6% (top 0% of all CVEs by exploitation probability). Affected: cbl2 redis 6.2.18-3 on CBL Mariner 2.0, azl3 valkey 8.0.4-1 on Azure Linux 3.0.
Risk Timeline
CVE Disclosed2025-10-14 · 388 days ago
Public PoC Exploit AvailableWeaponised proof-of-concept code is publicly accessible
Remediation Resources
Official Advisory
msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49844NVD / MITRE
nvd.nist.gov/vuln/detail/CVE-2025-49844Related Vulnerabilities
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| CVE-2025-71074 | functionfs: fix the open/removal races | CRITICAL | 9.8 |
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| CVE-2024-11236 | Integer overflow in the firebird and dblib quoters causing OOB writes | CRITICAL | 9.8 |
| CVE-2024-52533 | gio/gsocks4aproxy.c in GNOME GLib before 2.82.1 has an off-by-one error and resu | CRITICAL | 9.8 |
| CVE-2024-8932 | OOB access in ldap_escape | CRITICAL | 9.8 |
| CVE-2025-1744 | Out-of-bounds Write in radare2 | CRITICAL | 9.8 |
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