CVE-2026-18787

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-04. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 8.8Exploit: Elevated riskExposed: 0

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

A vulnerability was identified in GL.iNet AX1800 up to 4.8.3. The affected element is the function remove_rule of the file /usr/share/gl-ngx/oui-rpc.lua of the component RPC Endpoint. The manipulation of the argument args.id leads to command injection. The attack is possible to be carried out remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
56(Track*)
EG Risk 56/100SSVC: 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
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
2%
EPSS %ILE
75%
KEV
Not listed

Published

August 4, 2026

Last Modified

August 12, 2026

Advisory Details (1)

Auto-updated Aug 4, 2026
No patch confirmed yet.
generic

iot/GL-link AX1800.md at main · xxianxiayubanmian/iot · GitHub

https://github.com/xxianxiayubanmian/iot/blob/main/GL-link%20AX1800.md

Vendor Advisories for CVE-2026-18787(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 29× in last 7d / 75× 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. 2026-08-21 05:07 UTCEG score recompute
  2. 2026-08-21 05:07 UTCGHSA enrichment
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-20 18:03 UTCGHSA enrichment
  5. 2026-08-20 06:59 UTCGHSA enrichment
  6. 2026-08-19 19:55 UTCEG score recompute
  7. 2026-08-19 19:55 UTCGHSA enrichment
  8. 2026-08-19 17:03 UTCEPSS rescore
  9. 2026-08-19 08:48 UTCGHSA enrichment
  10. 2026-08-18 21:43 UTCEG score recompute
  11. 2026-08-18 21:43 UTCGHSA enrichment
  12. 2026-08-18 13:48 UTCEPSS rescore
  13. 2026-08-18 10:02 UTCGHSA enrichment
  14. 2026-08-17 22:57 UTCEG score recompute
  15. 2026-08-17 22:57 UTCGHSA enrichment
  16. 2026-08-17 13:47 UTCEPSS rescore
  17. 2026-08-17 11:51 UTCGHSA enrichment
  18. 2026-08-17 00:47 UTCEG score recompute
  19. 2026-08-17 00:47 UTCGHSA enrichment
  20. 2026-08-16 14:56 UTCEPSS rescore
  21. 2026-08-16 13:43 UTCGHSA enrichment
  22. 2026-08-16 02:38 UTCEG score recompute
  23. 2026-08-16 02:38 UTCGHSA enrichment
  24. 2026-08-16 02:14 UTCEPSS rescore
  25. 2026-08-15 15:34 UTCGHSA enrichment
Show 50 more
  1. 2026-08-15 04:30 UTCEG score recompute
  2. 2026-08-15 04:30 UTCGHSA enrichment
  3. 2026-08-15 01:30 UTCEPSS rescore
  4. 2026-08-14 17:25 UTCGHSA enrichment
  5. 2026-08-14 06:21 UTCEG score recompute
  6. 2026-08-14 06:21 UTCGHSA enrichment
  7. 2026-08-13 22:00 UTCEPSS rescore
  8. 2026-08-13 19:17 UTCGHSA enrichment
  9. 2026-08-13 08:13 UTCGHSA enrichment
  10. 2026-08-12 21:08 UTCGHSA enrichment
  11. 2026-08-12 14:40 UTCEG score recompute
  12. 2026-08-12 14:40 UTCGHSA enrichment
  13. 2026-08-12 13:50 UTCEPSS rescore
  14. 2026-08-12 03:36 UTCGHSA enrichment
  15. 2026-08-11 16:32 UTCEG score recompute
  16. 2026-08-11 16:32 UTCGHSA enrichment
  17. 2026-08-11 13:42 UTCEPSS rescore
  18. 2026-08-11 05:27 UTCEG score recompute
  19. 2026-08-11 05:27 UTCGHSA enrichment
  20. 2026-08-11 00:00 UTCEPSS rescore
  21. 2026-08-10 18:23 UTCGHSA enrichment
  22. 2026-08-10 07:19 UTCGHSA enrichment
  23. 2026-08-09 20:15 UTCEG score recompute
  24. 2026-08-09 20:15 UTCGHSA enrichment
  25. 2026-08-09 13:46 UTCEPSS rescore
  26. 2026-08-09 09:11 UTCGHSA enrichment
  27. 2026-08-08 22:07 UTCEG score recompute
  28. 2026-08-08 22:07 UTCGHSA enrichment
  29. 2026-08-08 16:37 UTCEPSS rescore
  30. 2026-08-08 11:02 UTCGHSA enrichment
  31. 2026-08-07 23:57 UTCEG score recompute
  32. 2026-08-07 23:57 UTCGHSA enrichment
  33. 2026-08-07 12:53 UTCGHSA enrichment
  34. 2026-08-07 01:49 UTCGHSA enrichment
  35. 2026-08-06 14:46 UTCEG score recompute
  36. 2026-08-06 14:46 UTCGHSA enrichment
  37. 2026-08-06 13:46 UTCEPSS rescore
  38. 2026-08-06 03:40 UTCEG score recompute
  39. 2026-08-06 03:40 UTCGHSA enrichment
  40. 2026-08-05 19:17 UTCEPSS rescore
  41. 2026-08-05 16:36 UTCGHSA enrichment
  42. 2026-08-05 05:32 UTCEG score recompute
  43. 2026-08-05 05:32 UTCGHSA enrichment
  44. 2026-08-04 18:25 UTCEG score recompute
  45. 2026-08-04 18:23 UTCNVD updateCVSS v4 → 7.4
  46. 2026-08-04 17:46 UTCMITRE cvelistV5CVSS v4 → 8.7
  47. 2026-08-04 17:23 UTCEG score recompute
  48. 2026-08-04 17:23 UTCNVD updateCVSS v4 → 7.4
  49. 2026-08-04 17:07 UTCEG score recompute
  50. 2026-08-04 17:06 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-18787?
CVE-2026-18787 is a high vulnerability published on August 4, 2026. A vulnerability was identified in GL.iNet AX1800 up to 4.8.3. The affected element is the function remove_rule of the file /usr/share/gl-ngx/oui-rpc.lua of the component RPC Endpoint. The manipulation of the argument args.id leads to command injection. The attack is possible to be carried out…
When was CVE-2026-18787 disclosed?
CVE-2026-18787 was first published in the National Vulnerability Database on August 4, 2026, with the most recent update on August 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18787 actively exploited?
CVE-2026-18787 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 25.3% of all scored CVEs.
What is the CVSS score of CVE-2026-18787?
CVE-2026-18787 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-18787?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-18787, 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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