Is CVE-2020-35776 in the CISA KEV catalog?

No. CVE-2020-35776 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-35776?

CVE-2020-35776 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2020-35776?

CVE-2020-35776 has an EPSS score of 3.91% (89th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-35776?

Upgrade asterisk on debian 11 to 1:16.16.1~dfsg-1 or later.

CVE & CISA-KEV Catalog

CVE-2020-35776

MEDIUMEPSS 89th pctl

6.5

CVSS v3

NVD

Description

A buffer overflow in res_pjsip_diversion.c in Sangoma Asterisk versions 13.38.1, 16.15.1, 17.9.1, and 18.1.1 allows remote attacker to crash Asterisk by deliberately misusing SIP 181 responses.

CWE-120Classic Buffer Overflow

How to fix

Remediation Available

asteriskDebian

Fixed in:1:16.16.1~dfsg-1CVE-2020-35776

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 InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

3.91%probability of exploitation in 30 days

89thpercentile

Elevated risk: more likely to be exploited than 89% of all known CVEs.

References

Patch2

Vendor Advisory2

Third-Party Advisory1

seclists.org

Related Vulnerabilities

Other CWE-120 (Classic Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0195	Medium	6.8	100%	-	Fix
CVE-2017-7269	Critical	9.8	100%	KEV	-
CVE-2019-11043	High	8.7	99%	KEV + Ransom	Fix
CVE-2011-4862	High	10.0	95%	-	Fix
CVE-2007-5659	High	7.8	94%	KEV	Fix
CVE-2022-3786	High	7.5	91%	-	Fix

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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.