CVE-2026-76853

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-16. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

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

Netcore NR268 firmware version 1.7.121109 contains a security check bypass vulnerability in the parame_put_file.cgi restore archive prefix validation. Attackers can exploit the flawed prefix check in put_parame_file_cgi.c to bypass restricted restore archive handling.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
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

Netcore NR268 1.7.121109 Security Check Bypass in parame_put_file.cgi | Advisories | VulnCheck

https://www.vulncheck.com/advisories/netcore-nr268-1.7.121109-security-check-bypass-in-parame-put-file-cgi
generic🟡 PoC Available

netcore-router-public-refs/2026.08.19-netcore-nr268-restore-bypass.md at main · draw-ctf/netcore-router-public-refs · GitHub

https://github.com/draw-ctf/netcore-router-public-refs/blob/main/2026.08.19-netcore-nr268-restore-bypass.md

Vendor Advisories for CVE-2026-76853(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 19× in last 7d / 19× 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. 2026-09-19 05:56 UTCEG score recompute
  2. 2026-09-19 05:56 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 18:35 UTCGHSA enrichment
  5. 2026-09-18 07:09 UTCGHSA enrichment
  6. 2026-09-17 19:47 UTCEG score recompute
  7. 2026-09-17 19:47 UTCGHSA enrichment
  8. 2026-09-17 08:25 UTCGHSA enrichment
  9. 2026-09-16 21:02 UTCGHSA enrichment
  10. 2026-09-16 19:24 UTCEG score recompute
  11. 2026-09-16 19:24 UTCGHSA enrichment
  12. 2026-09-16 19:15 UTCEG score recompute
  13. 2026-09-16 19:15 UTCGHSA enrichment
  14. 2026-09-16 14:08 UTCEPSS rescore
  15. 2026-09-16 09:42 UTCEG score recompute
  16. 2026-09-16 09:42 UTCGHSA enrichment
  17. 2026-09-15 22:19 UTCEG score recompute
  18. 2026-09-15 22:04 UTCEG score recompute
  19. 2026-09-15 22:02 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-76853?
CVE-2026-76853 is a high vulnerability published on September 15, 2026. Netcore NR268 firmware version 1.7.121109 contains a security check bypass vulnerability in the parameputfile.cgi restore archive prefix validation. Attackers can exploit the flawed prefix check in putparamefile_cgi.c to bypass restricted restore archive handling.
When was CVE-2026-76853 disclosed?
CVE-2026-76853 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-2026-76853 actively exploited?
CVE-2026-76853 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 87.5% of all scored CVEs.
What is the CVSS score of CVE-2026-76853?
CVE-2026-76853 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-76853?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-76853, 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-2026-76853

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