Envoy version 1.14.2, 1.13.2, 1.12.4 or earlier is susceptible to increased memory usage…
Priority LOW 36CWE-401Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-401.
Summary
Envoy version 1.14.2, 1.13.2, 1.12.4 or earlier is susceptible to increased memory usage in the case where an HTTP/2 client requests a large payload but does not send enough window updates to consume the entire stream and does not reset the stream.
Why it matters now
EPSS 0.01703 77th percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:* | up to 1.12.4 | Vulnerable | envoyproxy |
| cpe:2.3:a:envoyproxy:envoy:1.13.2:*:*:*:*:*:*:* | 1.13.2 | Vulnerable | envoyproxy |
| cpe:2.3:a:envoyproxy:envoy:1.14.2:*:*:*:*:*:*:* | 1.14.2 | Vulnerable | envoyproxy |
- cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:* Versions up to 1.12.4 Vulnerable ·envoyproxy
- cpe:2.3:a:envoyproxy:envoy:1.13.2:*:*:*:*:*:*:* Versions 1.13.2 Vulnerable ·envoyproxy
- cpe:2.3:a:envoyproxy:envoy:1.14.2:*:*:*:*:*:*:* Versions 1.14.2 Vulnerable ·envoyproxy
Remediation
Red Hat 2 advisories
- RHSA-2020:2864 Released 2020-07-07 · Red Hat rating ImportantRed Hat OpenShift Service Mesh 1.0 servicemesh-proxy security update
- OpenShift Service Mesh 1.0 servicemesh-proxy-1.0.11-1.el8
- RHSA-2020:2798 Released 2020-07-01 · Red Hat rating ImportantRed Hat OpenShift Service Mesh 1.1 servicemesh-proxy security update
- OpenShift Service Mesh 1.1 servicemesh-proxy-1.1.4-2.el8
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| OpenShift Service Mesh 1.0 | Fixed | RHSA-2020:2864 |
| OpenShift Service Mesh 1.1 | Fixed | RHSA-2020:2798 |
Timeline
- 2026-10-02 Threatist record created from CVE-2020-12604
References
More envoyproxy Envoy vulnerabilities
- TI-2026-79288 Out-of-bounds write in Google Brotli decoder KEVCVSS 4.0CRITICAL 9.2
- TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
- TI-2024-20001 HTTP/2: CPU exhaustion due to CONTINUATION frame flood CVSS 3.1HIGH 7.5
- TI-2024-18524 HTTP/2: memory exhaustion due to CONTINUATION frame flood CVSS 3.1HIGH 7.5
- TI-2023-12215 Envoy client may fake the header `x-envoy-original-path` CVSS 3.1CRITICAL 9.1
- TI-2023-18002 Envoy vulnerable to OAuth2 credentials exploit with permanent validity CVSS 3.1CRITICAL 9.8
Sources
- CVE-2020-12604 · CVE Program
- CVE-2020-12604 · NVD
- FIRST EPSS
- CVE-2020-12604 · Red Hat security data · CC BY 4.0
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