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CVE-2026-13589

5.6 · MEDIUM

A vulnerability was identified in seladb PcapPlusPlus 25.05.

Published Jun 29, 2026CWE-119EPSS 0.39%

Overview

CVE-2026-13589 is a medium-severity vulnerability. It was published on June 29, 2026 and has a CVSS 3.1 base score of 5.6 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.6, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A vulnerability was identified in seladb PcapPlusPlus 25.05. This affects the function pcpp::TelnetLayer::getSubCommand of the file Packet++/src/TelnetLayer.cpp of the component Telnet Subnegotiation Packet Handler. The manipulation leads to heap-based buffer overflow. The attack can be initiated remotely. The complexity of an attack is rather high. The exploitability is reported as difficult. The exploit is publicly available and might be used. The identifier of the patch is 98e671010bc7c87b95898c22ae289220ae92542b. It is recommended to apply a patch to fix this issue.

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

GitHubgithub.com/seladb/PcapPlusPlus/GitHubgithub.com/seladb/PcapPlusPlus/commit/98e671010bc7c87b95898c22ae289220ae92542bGitHubgithub.com/seladb/PcapPlusPlus/issues/2152GitHubgithub.com/seladb/PcapPlusPlus/pull/2161GitHubgithub.com/user-attachments/files/28214571/poc.zipRefvuldb.com/cve/CVE-2026-13589Refvuldb.com/submit/844482Refvuldb.com/vuln/374592Refvuldb.com/vuln/374592/cti

How CyberStrike helps

Frequently asked questions

What is CVE-2026-13589?

CVE-2026-13589 is a medium-severity vulnerability. It was published on June 29, 2026 and has a CVSS 3.1 base score of 5.6 (MEDIUM).

How severe is CVE-2026-13589?

This vulnerability has a CVSS 3.1 base score of 5.6, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-13589?

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-2026-13589?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-13589 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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