CVE-2025-52221

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 68% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

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

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

Tenda AC6 15.03.05.16_multi is vulnerable to Buffer Overflow in the formSetCfm function via the funcname, funcpara1, and funcpara2 parameters.

CVSS v3
9.8
EG Score
9.8(medium)
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%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
32%
KEV
Not listed

Published

April 8, 2026

Last Modified

July 25, 2026

Advisory Details (2)

Auto-updated Sep 12, 2026
No patch confirmed yet.
generic

iot-vulnerability-collection/README.md at main · xiaotea/iot-vulnerability-collection · GitHub

https://github.com/xiaotea/iot-vulnerability-collection/blob/main/README.md
generic

IoTVuln/tendaAc6_formSetCfm_funcname_overflow/detail.md at main · faqiadegege/IoTVuln · GitHub

https://github.com/faqiadegege/IoTVuln/blob/main/tendaAc6_formSetCfm_funcname_overflow/detail.md

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 29× 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 234 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-52221?
CVE-2025-52221 is a critical vulnerability published on April 8, 2026. Tenda AC6 15.03.05.16_multi is vulnerable to Buffer Overflow in the formSetCfm function via the funcname, funcpara1, and funcpara2 parameters.
When was CVE-2025-52221 disclosed?
CVE-2025-52221 was first published in the National Vulnerability Database on April 8, 2026, with the most recent update on July 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-52221 actively exploited?
CVE-2025-52221 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 67.6% of all scored CVEs.
What is the CVSS score of CVE-2025-52221?
CVE-2025-52221 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2025-52221?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-52221, 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

Explore the affected products and dependency analysis for CVE-2025-52221

Explore →

Is Your Infrastructure Affected by CVE-2025-52221?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs