CVE-2026-86296

CRITICALPre-NVD 10.010.0—
EchelonGraph scoreHIGH confidence

Score 10.0 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-07. a secondary CVSS source baseline 10.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 10.0Exploit: Elevated riskExposed: 0

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

A vulnerability was determined in D-Link DIR-822A A_101. This vulnerability affects the function strcpy of the file udhcpcd/serverpacket.c of the component udhcpcd. This manipulation causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized.

CVSS v3
10.0
EG Score
10.0(high)
EG Risk
76(Attend)
EG Risk 76/100SSVC: Attend

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
Severity100% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
70%
KEV
Not listed

Published

September 7, 2026

Last Modified

September 8, 2026

Advisory Details (2)

Auto-updated Sep 15, 2026
No patch confirmed yet.
generic

Smart Home, SMB and Enterprise solutions | D-Link

https://www.dlink.com/
generic

Notion

https://tzh00203.notion.site/D-Link-DIR-822A-Stack-Overflow-in-udhcpd-TR-111-Option-125-Parsing-33cb5c52018a80238b80e89e7c7c68f0

Vendor Advisories for CVE-2026-86296(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 53× in last 7d / 103× 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 103 total refreshes for this CVE.

  1. 2026-09-20 02:58 UTCGHSA enrichment
  2. 2026-09-19 22:46 UTCGHSA enrichment
  3. 2026-09-19 18:35 UTCEG score recompute
  4. 2026-09-19 18:35 UTCGHSA enrichment
  5. 2026-09-19 14:24 UTCGHSA enrichment
  6. 2026-09-19 10:13 UTCGHSA enrichment
  7. 2026-09-19 06:02 UTCGHSA enrichment
  8. 2026-09-19 01:49 UTCGHSA enrichment
  9. 2026-09-18 21:38 UTCEG score recompute
  10. 2026-09-18 21:38 UTCGHSA enrichment
  11. 2026-09-18 19:28 UTCEPSS rescore
  12. 2026-09-18 17:27 UTCGHSA enrichment
  13. 2026-09-18 13:15 UTCGHSA enrichment
  14. 2026-09-18 09:04 UTCGHSA enrichment
  15. 2026-09-18 04:53 UTCGHSA enrichment
  16. 2026-09-18 00:42 UTCGHSA enrichment
  17. 2026-09-17 20:31 UTCEG score recompute
  18. 2026-09-17 20:31 UTCGHSA enrichment
  19. 2026-09-17 19:32 UTCEPSS rescore
  20. 2026-09-17 16:18 UTCGHSA enrichment
  21. 2026-09-17 12:07 UTCGHSA enrichment
  22. 2026-09-17 07:56 UTCGHSA enrichment
  23. 2026-09-17 03:45 UTCGHSA enrichment
  24. 2026-09-16 23:34 UTCGHSA enrichment
  25. 2026-09-16 19:23 UTCGHSA enrichment
Show 75 more
  1. 2026-09-16 15:12 UTCEG score recompute
  2. 2026-09-16 15:12 UTCGHSA enrichment
  3. 2026-09-16 14:09 UTCEPSS rescore
  4. 2026-09-16 11:01 UTCGHSA enrichment
  5. 2026-09-16 06:50 UTCEG score recompute
  6. 2026-09-16 06:50 UTCGHSA enrichment
  7. 2026-09-16 05:15 UTCEPSS rescore
  8. 2026-09-16 02:40 UTCGHSA enrichment
  9. 2026-09-15 22:29 UTCGHSA enrichment
  10. 2026-09-15 18:18 UTCGHSA enrichment
  11. 2026-09-15 13:30 UTCGHSA enrichment
  12. 2026-09-15 09:19 UTCGHSA enrichment
  13. 2026-09-15 05:08 UTCEG score recompute
  14. 2026-09-15 05:08 UTCGHSA enrichment
  15. 2026-09-15 03:12 UTCEPSS rescore
  16. 2026-09-15 03:12 UTCEPSS rescore
  17. 2026-09-15 00:54 UTCGHSA enrichment
  18. 2026-09-14 20:43 UTCGHSA enrichment
  19. 2026-09-14 16:32 UTCGHSA enrichment
  20. 2026-09-14 12:21 UTCGHSA enrichment
  21. 2026-09-14 08:10 UTCGHSA enrichment
  22. 2026-09-14 03:58 UTCGHSA enrichment
  23. 2026-09-13 23:48 UTCGHSA enrichment
  24. 2026-09-13 19:37 UTCEG score recompute
  25. 2026-09-13 19:37 UTCGHSA enrichment
  26. 2026-09-13 15:26 UTCGHSA enrichment
  27. 2026-09-13 11:15 UTCGHSA enrichment
  28. 2026-09-13 07:04 UTCGHSA enrichment
  29. 2026-09-13 02:54 UTCGHSA enrichment
  30. 2026-09-12 22:43 UTCGHSA enrichment
  31. 2026-09-12 18:32 UTCEG score recompute
  32. 2026-09-12 18:32 UTCGHSA enrichment
  33. 2026-09-12 14:21 UTCGHSA enrichment
  34. 2026-09-12 10:10 UTCGHSA enrichment
  35. 2026-09-12 05:58 UTCGHSA enrichment
  36. 2026-09-12 01:47 UTCGHSA enrichment
  37. 2026-09-11 21:36 UTCGHSA enrichment
  38. 2026-09-11 17:25 UTCEG score recompute
  39. 2026-09-11 17:25 UTCGHSA enrichment
  40. 2026-09-11 14:53 UTCEPSS rescore
  41. 2026-09-11 14:53 UTCEPSS rescore
  42. 2026-09-11 13:09 UTCEG score recompute
  43. 2026-09-11 13:09 UTCGHSA enrichment
  44. 2026-09-11 08:58 UTCGHSA enrichment
  45. 2026-09-11 04:47 UTCGHSA enrichment
  46. 2026-09-11 00:36 UTCGHSA enrichment
  47. 2026-09-10 20:25 UTCGHSA enrichment
  48. 2026-09-10 16:14 UTCGHSA enrichment
  49. 2026-09-10 11:51 UTCEG score recompute
  50. 2026-09-10 11:51 UTCGHSA enrichment
  51. 2026-09-10 07:40 UTCGHSA enrichment
  52. 2026-09-10 03:29 UTCGHSA enrichment
  53. 2026-09-09 23:18 UTCGHSA enrichment
  54. 2026-09-09 16:05 UTCGHSA enrichment
  55. 2026-09-09 11:36 UTCGHSA enrichment
  56. 2026-09-09 07:25 UTCGHSA enrichment
  57. 2026-09-09 03:15 UTCGHSA enrichment
  58. 2026-09-08 23:04 UTCEG score recompute
  59. 2026-09-08 23:04 UTCGHSA enrichment
  60. 2026-09-08 22:01 UTCEPSS rescore
  61. 2026-09-08 18:15 UTCEG score recompute
  62. 2026-09-08 18:15 UTCGHSA enrichment
  63. 2026-09-08 17:28 UTCNVD updateCVSS v4 → 9.3
  64. 2026-09-08 16:58 UTCEG score recompute
  65. 2026-09-08 16:57 UTCGHSA enrichment
  66. 2026-09-08 16:54 UTCMITRE cvelistV5CVSS v4 → 10
  67. 2026-09-08 13:55 UTCGHSA enrichment
  68. 2026-09-08 12:38 UTCGHSA enrichment
  69. 2026-09-08 08:16 UTCGHSA enrichment
  70. 2026-09-08 04:05 UTCGHSA enrichment
  71. 2026-09-07 23:53 UTCGHSA enrichment
  72. 2026-09-07 19:42 UTCGHSA enrichment
  73. 2026-09-07 15:31 UTCEG score recompute
  74. 2026-09-07 15:31 UTCGHSA enrichment
  75. 2026-09-07 11:21 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-86296?
CVE-2026-86296 is a critical vulnerability published on September 7, 2026. A vulnerability was determined in D-Link DIR-822A A_101. This vulnerability affects the function strcpy of the file udhcpcd/serverpacket.c of the component udhcpcd. This manipulation causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been publicly…
When was CVE-2026-86296 disclosed?
CVE-2026-86296 was first published in the National Vulnerability Database on September 7, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-86296 actively exploited?
CVE-2026-86296 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 29.8% of all scored CVEs.
What is the CVSS score of CVE-2026-86296?
CVE-2026-86296 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2026-86296?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-86296, 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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