CVE-2026-16225

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreMEDIUM confidence

Score 6.3 from GitHub Security Advisory (severity: LOW) published 2026-07-19. a secondary CVSS source baseline 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.3Exploit: Elevated riskExposed: 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 davenardella snap7 up to 1.4.3. The impacted element is the function TSnap7Peer::NegotiatePDULength of the file src/core/s7_peer.cpp. The manipulation of the argument PDULength results in out-of-bounds write. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.

CVSS v3
6.3
EG Score
6.3(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity63% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
33%
KEV
Not listed

Published

July 19, 2026

Last Modified

July 20, 2026

Advisory Details (2)

Auto-updated Jul 19, 2026
No patch confirmed yet.
generic

GitHub - davenardella/snap7: Snap7 Official repository · GitHub

https://github.com/davenardella/snap7/
generic

Client-side `intra-object heap overflow` in `TSnap7MicroClient::opWriteArea()` via unbounded negotiated `PDULength` · Issue #17 · davenardella/snap7 · GitHub

https://github.com/davenardella/snap7/issues/17

Vendor Advisories for CVE-2026-16225(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 16× in last 7d / 79× 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.

Showing the most recent 100 of 111 total refreshes for this CVE.

  1. 2026-08-30 03:06 UTCEG score recompute
  2. 2026-08-30 03:06 UTCGHSA enrichment
  3. 2026-08-30 01:22 UTCEPSS rescore
  4. 2026-08-28 21:41 UTCEPSS rescore
  5. 2026-08-27 23:52 UTCEG score recompute
  6. 2026-08-27 23:52 UTCGHSA enrichment
  7. 2026-08-27 14:25 UTCEPSS rescore
  8. 2026-08-26 23:44 UTCEG score recompute
  9. 2026-08-26 23:44 UTCGHSA enrichment
  10. 2026-08-26 14:46 UTCEPSS rescore
  11. 2026-08-25 23:47 UTCEG score recompute
  12. 2026-08-25 23:47 UTCGHSA enrichment
  13. 2026-08-25 13:48 UTCEPSS rescore
  14. 2026-08-24 23:13 UTCEG score recompute
  15. 2026-08-24 23:13 UTCGHSA enrichment
  16. 2026-08-23 23:16 UTCGHSA enrichment
  17. 2026-08-22 23:19 UTCEG score recompute
  18. 2026-08-22 23:19 UTCGHSA enrichment
  19. 2026-08-21 23:49 UTCEPSS rescore
  20. 2026-08-21 23:19 UTCGHSA enrichment
  21. 2026-08-20 23:16 UTCEG score recompute
  22. 2026-08-20 23:16 UTCGHSA enrichment
  23. 2026-08-20 22:55 UTCEPSS rescore
  24. 2026-08-19 23:19 UTCEG score recompute
  25. 2026-08-19 23:19 UTCGHSA enrichment
Show 75 more
  1. 2026-08-19 17:03 UTCEPSS rescore
  2. 2026-08-18 19:52 UTCEG score recompute
  3. 2026-08-18 19:52 UTCGHSA enrichment
  4. 2026-08-18 13:48 UTCEPSS rescore
  5. 2026-08-17 14:20 UTCEG score recompute
  6. 2026-08-17 14:20 UTCGHSA enrichment
  7. 2026-08-17 13:47 UTCEPSS rescore
  8. 2026-08-16 14:56 UTCEPSS rescore
  9. 2026-08-16 14:23 UTCEG score recompute
  10. 2026-08-16 14:23 UTCGHSA enrichment
  11. 2026-08-16 02:14 UTCEPSS rescore
  12. 2026-08-15 14:26 UTCEG score recompute
  13. 2026-08-15 14:26 UTCGHSA enrichment
  14. 2026-08-15 01:30 UTCEPSS rescore
  15. 2026-08-14 14:28 UTCEG score recompute
  16. 2026-08-14 14:28 UTCGHSA enrichment
  17. 2026-08-13 22:00 UTCEPSS rescore
  18. 2026-08-13 14:31 UTCGHSA enrichment
  19. 2026-08-12 14:34 UTCEG score recompute
  20. 2026-08-12 14:34 UTCGHSA enrichment
  21. 2026-08-12 13:50 UTCEPSS rescore
  22. 2026-08-11 14:37 UTCEG score recompute
  23. 2026-08-11 14:37 UTCGHSA enrichment
  24. 2026-08-11 13:42 UTCEPSS rescore
  25. 2026-08-11 00:00 UTCEPSS rescore
  26. 2026-08-10 14:40 UTCGHSA enrichment
  27. 2026-08-09 14:43 UTCEG score recompute
  28. 2026-08-09 14:43 UTCGHSA enrichment
  29. 2026-08-09 13:46 UTCEPSS rescore
  30. 2026-08-08 16:37 UTCEPSS rescore
  31. 2026-08-08 14:46 UTCEG score recompute
  32. 2026-08-08 14:46 UTCGHSA enrichment
  33. 2026-08-07 14:48 UTCGHSA enrichment
  34. 2026-08-06 14:52 UTCEG score recompute
  35. 2026-08-06 14:52 UTCGHSA enrichment
  36. 2026-08-06 13:46 UTCEPSS rescore
  37. 2026-08-05 19:17 UTCEPSS rescore
  38. 2026-08-05 14:55 UTCEG score recompute
  39. 2026-08-05 14:55 UTCGHSA enrichment
  40. 2026-08-04 15:10 UTCEPSS rescore
  41. 2026-08-04 12:56 UTCEG score recompute
  42. 2026-08-04 12:56 UTCGHSA enrichment
  43. 2026-08-04 10:38 UTCEPSS rescore
  44. 2026-08-03 11:57 UTCEG score recompute
  45. 2026-08-03 11:57 UTCGHSA enrichment
  46. 2026-08-03 10:35 UTCEPSS rescore
  47. 2026-08-02 11:02 UTCEG score recompute
  48. 2026-08-02 11:02 UTCGHSA enrichment
  49. 2026-08-02 02:26 UTCEPSS rescore
  50. 2026-08-01 11:05 UTCEG score recompute
  51. 2026-08-01 11:05 UTCGHSA enrichment
  52. 2026-08-01 04:15 UTCEPSS rescore
  53. 2026-07-31 11:08 UTCEG score recompute
  54. 2026-07-31 11:07 UTCGHSA enrichment
  55. 2026-07-30 11:10 UTCEG score recompute
  56. 2026-07-30 11:09 UTCGHSA enrichment
  57. 2026-07-30 01:30 UTCEPSS rescore
  58. 2026-07-29 11:12 UTCEG score recompute
  59. 2026-07-29 11:12 UTCGHSA enrichment
  60. 2026-07-28 11:15 UTCEG score recompute
  61. 2026-07-28 11:14 UTCGHSA enrichment
  62. 2026-07-27 14:13 UTCEPSS rescore
  63. 2026-07-27 11:10 UTCEG score recompute
  64. 2026-07-27 11:10 UTCGHSA enrichment
  65. 2026-07-26 14:54 UTCEPSS rescore
  66. 2026-07-26 14:54 UTCEPSS rescore
  67. 2026-07-26 11:13 UTCEG score recompute
  68. 2026-07-26 11:13 UTCGHSA enrichment
  69. 2026-07-25 14:17 UTCEPSS rescore
  70. 2026-07-25 14:17 UTCEPSS rescore
  71. 2026-07-24 14:17 UTCEPSS rescore
  72. 2026-07-23 14:18 UTCEPSS rescore
  73. 2026-07-23 03:05 UTCEG score recompute
  74. 2026-07-22 14:08 UTCEPSS rescore
  75. 2026-07-21 15:24 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-16225?
CVE-2026-16225 is a medium vulnerability published on July 19, 2026. A security flaw has been discovered in davenardella snap7 up to 1.4.3. The impacted element is the function TSnap7Peer::NegotiatePDULength of the file src/core/s7_peer.cpp. The manipulation of the argument PDULength results in out-of-bounds write. The attack can be executed remotely. The exploit…
When was CVE-2026-16225 disclosed?
CVE-2026-16225 was first published in the National Vulnerability Database on July 19, 2026, with the most recent update on July 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16225 actively exploited?
CVE-2026-16225 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 67.1% of all scored CVEs.
What is the CVSS score of CVE-2026-16225?
CVE-2026-16225 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-16225?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16225, 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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