CVE-2022-24777

Name: CVE-2022-24777
Creator: NVD / NIST
Published: 2022-03-25T17:15:08.653+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.13%

Last modified Jun 17, 2026

CVE-2022-24777 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. grpc-swift is the Swift language implementation of gRPC, a remote procedure call (RPC) framework. Prior to version 1.7.2, a grpc-swift server is vulnerable to a denial of service attack via a reachable assertion. EPSS estimates a 1.13% chance of exploitation in the next 30 days.

Description

grpc-swift is the Swift language implementation of gRPC, a remote procedure call (RPC) framework. Prior to version 1.7.2, a grpc-swift server is vulnerable to a denial of service attack via a reachable assertion. This is due to incorrect logic when handling GOAWAY frames. The attack is low-effort: it takes very little resources to construct and send the required sequence of frames. The impact on availability is high as the server will crash, dropping all in flight connections and requests. This issue is fixed in version 1.7.2. There are currently no known workarounds.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.13%

62.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-617

Affected Software

Vendor	Product	Versions
Linuxfoundation	Grpc Swift	< 1.7.2

References

https://github.com/grpc/grpc-swift/commit/858f977f2a51fca2292f384cf7a108dc2e73a3bdPatch, Third Party Advisory
https://github.com/grpc/grpc-swift/security/advisories/GHSA-r6ww-5963-7r95Third Party Advisory
https://github.com/grpc/grpc-swift/commit/858f977f2a51fca2292f384cf7a108dc2e73a3bdPatch, Third Party Advisory
https://github.com/grpc/grpc-swift/security/advisories/GHSA-r6ww-5963-7r95Third Party Advisory

Timeline

Published: Mar 25, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-24777?

How severe is CVE-2022-24777?

CVE-2022-24777 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.13% probability of exploitation in the next 30 days.

How do I fix CVE-2022-24777?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-24777?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST