What’s Vulnerable › Vulnerabilities

CVE-2021-36513

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-10-18 · updated 2026-06-17
• Weakness: CWE-909

Description

An issue was discovered in function sofia_handle_sip_i_notify in sofia.c in SignalWire freeswitch before 1.10.6, may allow attackers to view sensitive information due to an uninitialized value.

Affected products

• signalwire Freeswitch: before 1.10.6 — fixed in 1.10.6

How to fix

Upgrade to a fixed version: signalwire Freeswitch 1.10.6. Check the vendor advisory for mitigations.

References

• https://github.com/signalwire/freeswitch/issues/1245
• https://github.com/signalwire/freeswitch/releases/tag/v1.10.6
• https://newreleases.io/project/github/signalwire/freeswitch/release/v1.10.6
• https://github.com/signalwire/freeswitch/issues/1245
• https://github.com/signalwire/freeswitch/releases/tag/v1.10.6
• https://newreleases.io/project/github/signalwire/freeswitch/release/v1.10.6

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