CVE-2026-104074

Coturn 4.10.0 contains an uninitialized memory disclosure vulnerability that allows remote unauthenticated attackers to leak stack memory contents by sending a TURN Allocate request without credentials. Attackers can exploit the stun_init_error_response_common_str() function in src/client/ns_turn_msg.c, which fails to zero-initialize the avalue buffer before computing its length with strlen() and copying leaked stack bytes into the ERROR-CODE reason phrase, exposing pointer fragments that weaken ASLR and enable precise version fingerprinting.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/coturn/coturn/commit/741b2983cc52f967dd08c438fd72a5f08f13ca27
https://github.com/coturn/coturn/pull/1878
https://github.com/coturn/coturn/releases/tag/4.11.0

Configurations

No configuration.

History

07 Oct 2026, 15:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-07 15:17

Updated : 2026-10-07 21:17

NVD link : CVE-2026-104074

Mitre link : CVE-2026-104074

CVE.ORG link : CVE-2026-104074

JSON object : View

Products Affected

No product.

CWE

CWE-908

Use of Uninitialized Resource

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