CVE-2026-89010

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-11. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 3%CVSS: 9.8Exploit: Elevated riskExposed: 0

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

WAVLINK WN535M1 and WN535M3 routers running firmware prior to M35M1_V250922 contain an unauthenticated OS command injection vulnerability that allows remote attackers to execute arbitrary commands as root by sending crafted filenames to the sync_server daemon on TCP port 13136. The daemon interpolates attacker-controlled filename input containing shell metacharacters into a shell command string via sprintf() and passes it to system() without sanitization, enabling root-level command execution on the device.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
75(Attend)
EG Risk 75/100SSVC: 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
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
3%
EPSS %ILE
86%
KEV
Not listed

Published

September 11, 2026

Last Modified

September 11, 2026

Advisory Details (3)

Auto-updated Sep 18, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

WAVLINK WN535M1/WN535M3 Unauthenticated OS Command Injection via sync_server | Advisories | VulnCheck

https://www.vulncheck.com/advisories/wavlink-wn535m1-wn535m3-unauthenticated-os-command-injection-via-sync-server
generic🟡 PoC Available

wavlink-sync_server-rce/README.md at main · camdsmith/wavlink-sync_server-rce · GitHub

https://github.com/camdsmith/wavlink-sync_server-rce/blob/main/README.md
generic

WAVLINK ROUTER Docs

https://docs.wavlink.xyz/

Vendor Advisories for CVE-2026-89010(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 57× in last 7d / 76× 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.

  1. 2026-09-20 04:28 UTCGHSA enrichment
  2. 2026-09-20 00:43 UTCGHSA enrichment
  3. 2026-09-19 20:59 UTCGHSA enrichment
  4. 2026-09-19 17:14 UTCEG score recompute
  5. 2026-09-19 17:14 UTCGHSA enrichment
  6. 2026-09-19 13:28 UTCGHSA enrichment
  7. 2026-09-19 09:43 UTCGHSA enrichment
  8. 2026-09-19 05:49 UTCGHSA enrichment
  9. 2026-09-19 02:04 UTCGHSA enrichment
  10. 2026-09-18 22:20 UTCEG score recompute
  11. 2026-09-18 22:20 UTCGHSA enrichment
  12. 2026-09-18 19:28 UTCEPSS rescore
  13. 2026-09-18 18:36 UTCGHSA enrichment
  14. 2026-09-18 14:51 UTCGHSA enrichment
  15. 2026-09-18 11:07 UTCGHSA enrichment
  16. 2026-09-18 07:22 UTCGHSA enrichment
  17. 2026-09-18 03:38 UTCGHSA enrichment
  18. 2026-09-17 23:53 UTCGHSA enrichment
  19. 2026-09-17 19:42 UTCEG score recompute
  20. 2026-09-17 19:42 UTCGHSA enrichment
  21. 2026-09-17 19:32 UTCEPSS rescore
  22. 2026-09-17 12:59 UTCGHSA enrichment
  23. 2026-09-17 09:04 UTCGHSA enrichment
  24. 2026-09-17 05:20 UTCGHSA enrichment
  25. 2026-09-17 01:35 UTCGHSA enrichment
Show 51 more
  1. 2026-09-16 21:51 UTCGHSA enrichment
  2. 2026-09-16 18:06 UTCGHSA enrichment
  3. 2026-09-16 14:20 UTCEG score recompute
  4. 2026-09-16 14:20 UTCGHSA enrichment
  5. 2026-09-16 14:09 UTCEPSS rescore
  6. 2026-09-16 10:35 UTCGHSA enrichment
  7. 2026-09-16 06:46 UTCEG score recompute
  8. 2026-09-16 06:46 UTCGHSA enrichment
  9. 2026-09-16 05:15 UTCEPSS rescore
  10. 2026-09-16 03:02 UTCGHSA enrichment
  11. 2026-09-15 23:17 UTCGHSA enrichment
  12. 2026-09-15 19:22 UTCGHSA enrichment
  13. 2026-09-15 15:37 UTCGHSA enrichment
  14. 2026-09-15 11:52 UTCGHSA enrichment
  15. 2026-09-15 08:07 UTCGHSA enrichment
  16. 2026-09-15 04:22 UTCEG score recompute
  17. 2026-09-15 04:22 UTCGHSA enrichment
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-15 00:36 UTCGHSA enrichment
  20. 2026-09-14 20:51 UTCGHSA enrichment
  21. 2026-09-14 17:06 UTCGHSA enrichment
  22. 2026-09-14 13:21 UTCGHSA enrichment
  23. 2026-09-14 09:36 UTCGHSA enrichment
  24. 2026-09-14 05:51 UTCGHSA enrichment
  25. 2026-09-14 02:07 UTCGHSA enrichment
  26. 2026-09-13 22:22 UTCGHSA enrichment
  27. 2026-09-13 18:38 UTCEG score recompute
  28. 2026-09-13 18:38 UTCGHSA enrichment
  29. 2026-09-13 16:48 UTCEPSS rescore
  30. 2026-09-13 14:54 UTCGHSA enrichment
  31. 2026-09-13 11:07 UTCGHSA enrichment
  32. 2026-09-13 07:22 UTCGHSA enrichment
  33. 2026-09-13 03:36 UTCGHSA enrichment
  34. 2026-09-12 23:51 UTCGHSA enrichment
  35. 2026-09-12 20:06 UTCGHSA enrichment
  36. 2026-09-12 16:21 UTCEG score recompute
  37. 2026-09-12 16:21 UTCGHSA enrichment
  38. 2026-09-12 15:02 UTCEPSS rescore
  39. 2026-09-12 12:36 UTCGHSA enrichment
  40. 2026-09-12 08:51 UTCGHSA enrichment
  41. 2026-09-12 05:06 UTCGHSA enrichment
  42. 2026-09-12 01:22 UTCGHSA enrichment
  43. 2026-09-11 21:37 UTCGHSA enrichment
  44. 2026-09-11 17:53 UTCGHSA enrichment
  45. 2026-09-11 17:32 UTCEG score recompute
  46. 2026-09-11 17:32 UTCGHSA enrichment
  47. 2026-09-11 16:29 UTCEG score recompute
  48. 2026-09-11 16:29 UTCGHSA enrichment
  49. 2026-09-11 15:28 UTCEG score recompute
  50. 2026-09-11 15:04 UTCEG score recompute
  51. 2026-09-11 15:03 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-89010?
CVE-2026-89010 is a critical vulnerability published on September 11, 2026. WAVLINK WN535M1 and WN535M3 routers running firmware prior to M35M1V250922 contain an unauthenticated OS command injection vulnerability that allows remote attackers to execute arbitrary commands as root by sending crafted filenames to the syncserver daemon on TCP port 13136. The daemon…
When was CVE-2026-89010 disclosed?
CVE-2026-89010 was first published in the National Vulnerability Database on September 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-89010 actively exploited?
CVE-2026-89010 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3% probability of exploitation in the next 30 days, which ranks it in the top 13.9% of all scored CVEs.
What is the CVSS score of CVE-2026-89010?
CVE-2026-89010 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-89010?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-89010, 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-2026-89010

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