Vulnerability Report

CVE-2020-8660

Title: Envoyproxy Envoy

Other

Proof Of Concept

No public PoC currently indexed for CVE-2020-8660.

CWE Category CWE-345
Published Date Mar 04, 2020
Modified Date Jun 17, 2026
Exploit Status Not Found
Score 5.3 CVSS v3.1
Exploit Probability (EPSS)
0.61%

Vulnerability Summary

CVE-2020-8660: CNCF Envoy through 1.13.0 TLS inspector bypass. TLS inspector could have been bypassed (not recognized as a TLS client) by a client using only TLS 1.3. Because TLS extensions (SNI, ALPN) were not inspected, those connections might have been matched to a wrong filter chain, possibly bypassing some security restrictions in the process.

Impacted Vendors

E
enphase 1
E
envoyproxy 1

Reference Links

https://access.redhat.com/errata/RHSA-2020:0734 https://github.com/envoyproxy/envoy/security/advisories/GHSA-c4g8-7grc-5wvx https://www.envoyproxy.io/docs/envoy/v1.13.1/intro/version_history https://access.redhat.com/errata/RHSA-2020:0734 https://github.com/envoyproxy/envoy/security/advisories/GHSA-c4g8-7grc-5wvx https://www.envoyproxy.io/docs/envoy/v1.13.1/intro/version_history
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
5.3
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
5.0
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:L/Au:N/C:P/I:N/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2020-8660 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected Stack

No specific products linked.