CVE-2026-13590

MEDIUMPre-NVD 5.65.6—
EchelonGraph scoreHIGH confidence

Score 5.6 from GitHub Security Advisory (severity: LOW) published 2026-06-29. a secondary CVSS source baseline 5.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.6
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.6Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A security flaw has been discovered in seladb PcapPlusPlus 25.05. This impacts the function pcpp::ModbusLayer::getLength in the library Packet++/header/ModbusLayer.h of the component Modbus Protocol Handler. The manipulation of the argument length results in heap-based buffer overflow. The attack can be launched remotely. A high complexity level is associated with this attack. The exploitability is said to be difficult. The exploit has been released to the public and may be used for attacks. The patch is identified as 4c90c3e3418a2b09dc82b7ca5775e9c1e22fe454. Applying a patch is advised to resolve this issue.

CVSS v3
5.6
EG Score
5.6(high)
EPSS
31.4%
KEV
Not listed

Published

June 29, 2026

Last Modified

June 30, 2026

Advisory Details (4)

Auto-updated Jun 29, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit, github_pr.
github_pr

Fix heap-buffer-overflow in ModbusLayer on truncated packets

Fix merged in seladb/PcapPlusPlus PR #2159 on 2026-06-24 — awaiting tagged release

https://github.com/seladb/PcapPlusPlus/pull/2159
generic

Heap-Buffer-Overflow in ModbusLayer::getLength() · Issue #2155 · seladb/PcapPlusPlus · GitHub

https://github.com/seladb/PcapPlusPlus/issues/2155
github_commit

commit 4c90c3e3418a (seladb/PcapPlusPlus)

Fix landed in seladb/PcapPlusPlus commit 4c90c3e3418a — awaiting tagged release

https://github.com/seladb/PcapPlusPlus/commit/4c90c3e3418a2b09dc82b7ca5775e9c1e22fe454
generic

GitHub - seladb/PcapPlusPlus: PcapPlusPlus is a multiplatform C++ library for capturing, parsing and crafting of network packets. It is designed to be efficient, powerful and easy to use. It provides C++ wrappers for the most popular packet processing engines such as libpcap, Npcap, WinPcap, DPDK, AF_XDP and PF_RING. · GitHub

https://github.com/seladb/PcapPlusPlus/

Vendor Advisories for CVE-2026-13590(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 22× in last 7d / 25× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 09:20 UTCEG score recompute
  3. 2026-07-06 09:19 UTCGHSA enrichment
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-05 10:27 UTCEG score recompute
  6. 2026-07-05 10:27 UTCGHSA enrichment
  7. 2026-07-05 02:30 UTCEPSS rescore
  8. 2026-07-05 02:30 UTCEPSS rescore
  9. 2026-07-04 11:36 UTCEG score recompute
  10. 2026-07-04 11:36 UTCGHSA enrichment
  11. 2026-07-04 06:31 UTCEPSS rescore
  12. 2026-07-03 12:46 UTCEG score recompute
  13. 2026-07-03 12:46 UTCGHSA enrichment
  14. 2026-07-02 13:54 UTCEG score recompute
  15. 2026-07-02 13:54 UTCGHSA enrichment
  16. 2026-07-01 15:06 UTCEPSS rescore
  17. 2026-07-01 15:06 UTCEPSS rescore
  18. 2026-07-01 15:04 UTCEG score recompute
  19. 2026-07-01 15:03 UTCGHSA enrichment
  20. 2026-06-30 23:22 UTCEPSS rescore
  21. 2026-06-30 16:10 UTCEG score recompute
  22. 2026-06-30 16:10 UTCGHSA enrichment
  23. 2026-06-29 17:26 UTCNVD updateCVSS v4 → 2.9
  24. 2026-06-29 17:18 UTCEG score recompute
  25. 2026-06-29 17:17 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-13590?
CVE-2026-13590 is a medium vulnerability published on June 29, 2026. A security flaw has been discovered in seladb PcapPlusPlus 25.05. This impacts the function pcpp::ModbusLayer::getLength in the library Packet++/header/ModbusLayer.h of the component Modbus Protocol Handler. The manipulation of the argument length results in heap-based buffer overflow. The attack…
When was CVE-2026-13590 disclosed?
CVE-2026-13590 was first published in the National Vulnerability Database on June 29, 2026, with the most recent update on June 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-13590 actively exploited?
CVE-2026-13590 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 31.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-13590?
CVE-2026-13590 has a CVSS v3 base score of 5.6 (NVD).
How do I remediate CVE-2026-13590?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-13590, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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