CVE-2026-71958

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-08. the CNA's CVSS baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 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.

D-Link DWR-M961 devices with hardware version C1 and software version 1.1.2_C1_202602110044 contain a buffer overflow vulnerability in the quicksetup.cgi interface. A remote attacker can write overly long strings to the test4, ssid2, and username fields and execute arbitrary commands by crafting a specific payload, or cause the device to crash.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
44%
KEV
Not listed

Published

August 8, 2026

Last Modified

August 14, 2026

Advisory Details (3)

Auto-updated Aug 14, 2026
No patch confirmed yet.
generic

D-Link DWR-M961 Buffer Overflow via quicksetup.cgi | Advisories | VulnCheck

https://www.vulncheck.com/advisories/d-link-dwr-m961-buffer-overflow-via-quicksetup-cgi
generic

DWR-M961 4G AC1200 LTE Router | D-Link

https://www.dlink.com/middle-east/en/products/dwr-m961-4g-ac1200-lte-router
generic

D-Link Technical Support

https://supportannouncement.us.dlink.com/security/publication.aspx?name=SAP10512

Vendor Advisories for CVE-2026-71958(1)

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 58× in last 7d / 107× 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 107 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-71958?
CVE-2026-71958 is a critical vulnerability published on August 8, 2026. D-Link DWR-M961 devices with hardware version C1 and software version 1.1.2C1202602110044 contain a buffer overflow vulnerability in the quicksetup.cgi interface. A remote attacker can write overly long strings to the test4, ssid2, and username fields and execute arbitrary commands by crafting a…
When was CVE-2026-71958 disclosed?
CVE-2026-71958 was first published in the National Vulnerability Database on August 8, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-71958 actively exploited?
CVE-2026-71958 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 55.6% of all scored CVEs.
What is the CVSS score of CVE-2026-71958?
CVE-2026-71958 has a CVSS v4.0 base score of 9.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-71958?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-71958, 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.

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