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
5.6EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.6Exploit: None knownExposed: 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)
EG Risk
30(Track)
EG Risk 30/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity56% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
32%
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 15× in last 7d / 59× 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. 2026-07-28 15:36 UTCEPSS rescore
  2. 2026-07-28 14:28 UTCEG score recompute
  3. 2026-07-28 14:28 UTCGHSA enrichment
  4. 2026-07-27 14:13 UTCEPSS rescore
  5. 2026-07-27 13:08 UTCEG score recompute
  6. 2026-07-27 13:08 UTCGHSA enrichment
  7. 2026-07-26 14:54 UTCEPSS rescore
  8. 2026-07-26 14:54 UTCEPSS rescore
  9. 2026-07-26 14:14 UTCEG score recompute
  10. 2026-07-26 14:14 UTCGHSA enrichment
  11. 2026-07-25 14:17 UTCEPSS rescore
  12. 2026-07-24 14:17 UTCEPSS rescore
  13. 2026-07-23 14:18 UTCEPSS rescore
  14. 2026-07-23 03:05 UTCEG score recompute
  15. 2026-07-22 14:08 UTCEPSS rescore
  16. 2026-07-21 15:24 UTCEPSS rescore
  17. 2026-07-20 17:08 UTCEPSS rescore
  18. 2026-07-19 02:28 UTCEPSS rescore
  19. 2026-07-18 10:04 UTCEPSS rescore
  20. 2026-07-16 21:18 UTCGHSA enrichment
  21. 2026-07-16 17:02 UTCEPSS rescore
  22. 2026-07-15 22:27 UTCGHSA enrichment
  23. 2026-07-15 16:57 UTCEPSS rescore
  24. 2026-07-15 02:00 UTCEPSS rescore
  25. 2026-07-14 23:35 UTCGHSA enrichment
Show 34 more
  1. 2026-07-14 00:30 UTCGHSA enrichment
  2. 2026-07-13 22:30 UTCEPSS rescore
  3. 2026-07-13 06:12 UTCEPSS rescore
  4. 2026-07-13 01:38 UTCGHSA enrichment
  5. 2026-07-12 05:46 UTCEPSS rescore
  6. 2026-07-12 02:47 UTCGHSA enrichment
  7. 2026-07-11 08:27 UTCEPSS rescore
  8. 2026-07-11 03:56 UTCGHSA enrichment
  9. 2026-07-10 05:05 UTCGHSA enrichment
  10. 2026-07-09 19:10 UTCEPSS rescore
  11. 2026-07-09 06:09 UTCGHSA enrichment
  12. 2026-07-08 15:15 UTCEPSS rescore
  13. 2026-07-08 15:15 UTCEPSS rescore
  14. 2026-07-08 07:15 UTCGHSA enrichment
  15. 2026-07-07 13:46 UTCEPSS rescore
  16. 2026-07-07 08:11 UTCGHSA enrichment
  17. 2026-07-06 16:27 UTCEPSS rescore
  18. 2026-07-06 09:19 UTCGHSA enrichment
  19. 2026-07-06 02:23 UTCEPSS rescore
  20. 2026-07-05 10:27 UTCGHSA enrichment
  21. 2026-07-05 02:30 UTCEPSS rescore
  22. 2026-07-05 02:30 UTCEPSS rescore
  23. 2026-07-04 11:36 UTCGHSA enrichment
  24. 2026-07-04 06:31 UTCEPSS rescore
  25. 2026-07-03 12:46 UTCGHSA enrichment
  26. 2026-07-02 13:54 UTCGHSA enrichment
  27. 2026-07-01 15:06 UTCEPSS rescore
  28. 2026-07-01 15:06 UTCEPSS rescore
  29. 2026-07-01 15:03 UTCGHSA enrichment
  30. 2026-06-30 23:22 UTCEPSS rescore
  31. 2026-06-30 16:10 UTCGHSA enrichment
  32. 2026-06-29 17:26 UTCNVD updateCVSS v4 → 2.9
  33. 2026-06-29 17:18 UTCEG score recompute
  34. 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 0% probability of exploitation in the next 30 days, which ranks it in the top 67.9% of all scored CVEs.
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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