CVE-2018-25318

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-04-29. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

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

Tenda FH303/A300 firmware V5.07.68_EN contains a session weakness vulnerability that allows unauthenticated attackers to modify DNS settings by exploiting insufficient cookie validation. Attackers can send GET requests to the /goform/AdvSetDns endpoint with a crafted admin cookie to change DNS servers and redirect user traffic to malicious sites.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
47.0%
KEV
Not listed

Published

April 29, 2026

Last Modified

May 4, 2026

Advisory Details (2)

Auto-updated May 12, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

Tenda FH303/A300 V5.07.68_EN Cookie Session Weakness DNS Change | Advisories | VulnCheck

https://www.vulncheck.com/advisories/tenda-fh303-a300-68-en-cookie-session-weakness-dns-change
generic🟡 PoC Available

Tenda FH303/A300 Firmware v5.07.68_EN - Remote DNS Change - ASP webapps Exploit

https://www.exploit-db.com/exploits/44381

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 48× 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 284 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2018-25318?
CVE-2018-25318 is a critical vulnerability published on April 29, 2026. Tenda FH303/A300 firmware V5.07.68_EN contains a session weakness vulnerability that allows unauthenticated attackers to modify DNS settings by exploiting insufficient cookie validation. Attackers can send GET requests to the /goform/AdvSetDns endpoint with a crafted admin cookie to change DNS…
When was CVE-2018-25318 disclosed?
CVE-2018-25318 was first published in the National Vulnerability Database on April 29, 2026, with the most recent update on May 4, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-25318 actively exploited?
CVE-2018-25318 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 47.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-25318?
CVE-2018-25318 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2018-25318?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-25318, 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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