CVE-2021-36513

Q: How do I fix CVE-2021-36513?

Upgrade freeswitch to 1.10.6 or later.

Q: Is CVE-2021-36513 being actively exploited?

Not that we know of. CVE-2021-36513 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.8% is the estimated probability that it will be exploited in the next 30 days. That is higher than 77% of all scored CVEs.

Q: How severe is CVE-2021-36513?

CVE-2021-36513 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2021-36513 affect?

Published advisories record a fix for freeswitch (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

HIGHEPSS 77th pctl

7.5

CVSS v3

NVD

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.

CWE-909

How to fix

Remediation Available

freeswitchNVD

Affected:< 1.10.6Fixed in:1.10.6CVE-2021-36513derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

1.81%probability of exploitation in 30 days

77thpercentile

Elevated risk: more likely to be exploited than 77% of all known CVEs.

References

Exploit1

github.com

Third-Party Advisory2

Related Vulnerabilities

Other CWE-909 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2018-14647	High	7.5	11%	-	Fix
CVE-2019-9639	High	7.5	8.2%	-	Fix
CVE-2018-10811	High	7.5	6.2%	-	Fix
CVE-2020-12352	Medium	6.5	5.7%	-	Fix
CVE-2019-3804	High	7.5	4.9%	-	Fix
CVE-2020-16932	High	7.8	4.8%	-	-

Common questions

How do I fix CVE-2021-36513?

Upgrade freeswitch to 1.10.6 or later.

Is CVE-2021-36513 being actively exploited?

Not that we know of. CVE-2021-36513 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.8% is the estimated probability that it will be exploited in the next 30 days. That is higher than 77% of all scored CVEs.

How severe is CVE-2021-36513?

CVE-2021-36513 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2021-36513 affect?

Published advisories record a fix for freeswitch (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2021-36513

Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.