CVE-2026-49181

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 1.2%, top 34% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

Integer underflow (wrap or wraparound) in Windows DHCP Client allows an unauthorized attacker to elevate privileges over a network.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
60(Track)
EG Risk 60/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
66%
KEV
Not listed

Published

July 14, 2026

Last Modified

September 17, 2026

Advisory Details (1)

Auto-updated Sep 17, 2026
Patch available. Sources: microsoft.
microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49181

Vendor Advisories for CVE-2026-49181(2)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 25× in last 7d / 169× 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 517 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-49181?
CVE-2026-49181 is a critical vulnerability published on July 14, 2026. Integer underflow (wrap or wraparound) in Windows DHCP Client allows an unauthorized attacker to elevate privileges over a network.
When was CVE-2026-49181 disclosed?
CVE-2026-49181 was first published in the National Vulnerability Database on July 14, 2026, with the most recent update on September 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-49181 actively exploited?
CVE-2026-49181 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 33.9% of all scored CVEs.
What is the CVSS score of CVE-2026-49181?
CVE-2026-49181 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-49181?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-49181, 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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