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CVE-2024-23322

22
FAUCET Score

CVE-2024-23322 describes a denial-of-service vulnerability in Envoy proxy versions prior to 1.29.1, 1.28.1, 1.27.3, and 1.26.7. The flaw allows an attacker to crash the Envoy service when specific timeout configurations (hedge_on_per_try_timeout, per_try_idle_timeout, and per-try-timeout) are simultaneously enabled and their values align. With a CVSS score of 7.5 (High), this vulnerability has a low attack complexity and does not require user interaction or privileges, making it easily exploitable over the network to achieve a complete denial of service. There is no impact on confidentiality or integrity. Currently, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE. Users are strongly advised to upgrade to patched versions as no workarounds exist.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.26.0, < 1.26.7CPE matchmatch criteria
cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
>= 1.27.0, < 1.27.3CPE matchmatch criteria
cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
>= 1.28.0, < 1.28.1CPE matchmatch criteria
cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
>= 1.29.0, < 1.29.1CPE matchmatch criteria
cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.68%
Probability of exploitation in next 30 days
EPSS Percentile
48.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0068 is in the 25th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
redhatno patchvia redhat_api
Product: OpenShift Service Mesh 2Fixed in: openshift-service-mesh/proxyv2-rhel8
redhatno patchvia redhat_api
Product: OpenShift Service Mesh 2Fixed in: servicemesh-proxy

Vendor Advisories (1)

redhatCVE-2024-23322Moderate

envoy: Envoy crashes when idle and request per try timeout occur within the backoff interval

Feb 9, 2024

References

github.com / envoyproxy/envoy/commit/843f9e6a123ed47ce139b421c14e7126f2ac685e
PatchVendor Advisory
github.com / envoyproxy/envoy/security/advisories/GHSA-6p83-mfmh-qv38
Vendor Advisory