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CVE-2026-49840

🗓️ 10 Jun 2026 21:02:04Reported by redhat.comType 
redhatcve
 redhatcve
🔗 access.redhat.com👁 3 Views

FreeSWITCH esl_recv_event allocates from negative Content-Length, causing heap crash before authentication.

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10 Jun 202616:37
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CVE-2026-49840 FreeSWITCH: Pre-authentication heap buffer overflow in libesl `Content-Length` parsing
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9 Jun 202616:00
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9 Jun 202600:00
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9 Jun 202616:00
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10 Jun 2026 21:02Current
5.4Medium risk
Vulners AI Score5.4
CVSS 3.19.1
EPSS0.00059
SSVC
3