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CVE-2026-45988

9.8 · CRITICAL

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix re-decryption of RESPONSE packets If a RESPONSE packet gets a temporary failure during processing, it may end up in…

Published May 27, 2026EPSS 0.46%

Overview

CVE-2026-45988 is a critical-severity vulnerability. It was published on May 27, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

rxrpc: Fix re-decryption of RESPONSE packets

If a RESPONSE packet gets a temporary failure during processing, it may end

up in a partially decrypted state - and then get requeued for a retry.

Fix this by just discarding the packet; we will send another CHALLENGE

packet and thereby elicit a further response. Similarly, discard an

incoming CHALLENGE packet if we get an error whilst generating a RESPONSE;

the server will send another CHALLENGE.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/0422e7a4883f25101903f3e8105c0808aa5f4ce9Refgit.kernel.org/stable/c/76cb9a2d252274adfae6e293a292434631a7d472Refgit.kernel.org/stable/c/7b89868305052b94a91b708c462bc2281fa42a4aRefgit.kernel.org/stable/c/d61482be4aae1835b78875761206241835a7510eRefgit.kernel.org/stable/c/f55b383070170e988e4dec28be2af1714d258521

How CyberStrike helps

Frequently asked questions

What is CVE-2026-45988?

CVE-2026-45988 is a critical-severity vulnerability. It was published on May 27, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-45988?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-45988?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-45988?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-45988 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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