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No exploitation reportedFix available

CVE-2021-36513

No exploitation reported by the sources we read.

  • Published2021-10-18
  • Fixed in1.10.6
  • WeaknessCWE-909

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2021-10-1817:15CVE publishedNVD

Versions per branch

NVD
Signalwire freeswitch
BranchAffectedFixed in
1.10< 1.10.61.10.6

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Signalwire freeswitch to 1.10.6

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2021-10-18
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-jg94-6rjh-cfh5

Frequently asked questions

What is CVE-2021-36513?

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.

Is CVE-2021-36513 actively exploited?

Active exploitation of CVE-2021-36513 has not been confirmed. Its EPSS score was 1.9% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-36513?

CVE-2021-36513 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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