CVE-2026-91853

HIGHPre-NVD 7.47.4—
EchelonGraph scoreHIGH confidence

Score 7.4 from GitHub Security Advisory (severity: LOW) published 2026-09-15. a secondary CVSS source baseline 7.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this weekElevated
7.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.4Exploit: Elevated riskExposed: 0

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

A vulnerability has been found in TOTOLINK X5000R 9.1.0cu.2089_B20211224. The impacted element is the function exportOvpn of the file /cgi-bin/cstecgi.cgi?action=exportOvpn&type=user of the component Export Ovpn Handler. The manipulation of the argument filetype leads to os command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

CVSS v3
7.4
EG Score
7.4(high)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity74% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
71%
KEV
Not listed

Published

September 15, 2026

Last Modified

September 16, 2026

Advisory Details (2)

Auto-updated Sep 15, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

TOTOLINK | Wi-Fi 7, Mesh, 5G & Enterprise Networking

https://www.totolink.net/
generic🟡 PoC Available

TOTOLINK_X5000R/2.md at main · awigwu76/TOTOLINK_X5000R · GitHub

https://github.com/awigwu76/TOTOLINK_X5000R/blob/main/2.md

Vendor Advisories for CVE-2026-91853(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 / 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.

  1. 2026-09-21 09:04 UTCGHSA enrichment
  2. 2026-09-20 21:58 UTCEG score recompute
  3. 2026-09-20 21:58 UTCGHSA enrichment
  4. 2026-09-20 20:16 UTCEPSS rescore
  5. 2026-09-20 10:50 UTCGHSA enrichment
  6. 2026-09-19 23:43 UTCEG score recompute
  7. 2026-09-19 23:43 UTCGHSA enrichment
  8. 2026-09-19 12:37 UTCGHSA enrichment
  9. 2026-09-19 01:30 UTCEG score recompute
  10. 2026-09-19 01:30 UTCGHSA enrichment
  11. 2026-09-18 19:28 UTCEPSS rescore
  12. 2026-09-18 14:23 UTCGHSA enrichment
  13. 2026-09-18 03:16 UTCEG score recompute
  14. 2026-09-18 03:16 UTCGHSA enrichment
  15. 2026-09-17 19:32 UTCEPSS rescore
  16. 2026-09-17 16:09 UTCGHSA enrichment
  17. 2026-09-17 05:02 UTCGHSA enrichment
  18. 2026-09-16 17:55 UTCEG score recompute
  19. 2026-09-16 17:55 UTCGHSA enrichment
  20. 2026-09-16 14:09 UTCEPSS rescore
  21. 2026-09-16 05:40 UTCGHSA enrichment
  22. 2026-09-15 18:33 UTCEG score recompute
  23. 2026-09-15 18:33 UTCGHSA enrichment
  24. 2026-09-15 18:31 UTCNVD updateCVSS v4 → 2.1
  25. 2026-09-15 17:38 UTCMITRE cvelistV5CVSS v4 → 5.3
Show 4 more
  1. 2026-09-15 17:32 UTCEG score recompute
  2. 2026-09-15 17:31 UTCNVD updateCVSS v4 → 2.1
  3. 2026-09-15 16:18 UTCEG score recompute
  4. 2026-09-15 16:17 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-91853?
CVE-2026-91853 is a high vulnerability published on September 15, 2026. A vulnerability has been found in TOTOLINK X5000R 9.1.0cu.2089_B20211224. The impacted element is the function exportOvpn of the file /cgi-bin/cstecgi.cgi?action=exportOvpn&type=user of the component Export Ovpn Handler. The manipulation of the argument filetype leads to os command injection. The…
When was CVE-2026-91853 disclosed?
CVE-2026-91853 was first published in the National Vulnerability Database on September 15, 2026, with the most recent update on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-91853 actively exploited?
CVE-2026-91853 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 29.3% of all scored CVEs.
What is the CVSS score of CVE-2026-91853?
CVE-2026-91853 has a CVSS v3 base score of 7.4 (NVD).
How do I remediate CVE-2026-91853?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-91853, 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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