CVE-2021-36513

HIGHNVD 7.57.5—

7.5

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.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 65.3%
KEV: Not listed

Published

October 18, 2021

Last Modified

November 21, 2024

References (6)

cve@mitrehttps://github.com/signalwire/freeswitch/issues/1245
cve@mitrehttps://github.com/signalwire/freeswitch/releases/tag/v1.10.6
cve@mitrehttps://newreleases.io/project/github/signalwire/freeswitch/release/v1.10.6
af854a3a-2127-422b-91ae-364da2661108https://github.com/signalwire/freeswitch/issues/1245
af854a3a-2127-422b-91ae-364da2661108https://github.com/signalwire/freeswitch/releases/tag/v1.10.6
af854a3a-2127-422b-91ae-364da2661108https://newreleases.io/project/github/signalwire/freeswitch/release/v1.10.6

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-909

Data Freshness Timeline

(refreshed 12× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
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2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
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2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 08:56 UTCEG score recompute
2026-05-26 08:56 UTCGHSA enrichment
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2021-36513?

CVE-2021-36513 is a high vulnerability published on October 18, 2021. An issue was discovered in function sofiahandlesipinotify in sofia.c in SignalWire freeswitch before 1.10.6, may allow attackers to view sensitive information due to an uninitialized value.

When was CVE-2021-36513 disclosed?

CVE-2021-36513 was first published in the National Vulnerability Database on October 18, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-36513 actively exploited?

CVE-2021-36513 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 65.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

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

CVE-2021-36513 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2021-36513?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-36513, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2021-36513

📅 Published

🔄 Last Modified

🔗 References (6)