A vulnerability was found in Comfast CF-N1-S 2.6.0.1. This impacts the function sub_44B50C of the file /cgi-bin/mbox-config?method=SET§ion=ptest_channel of the component Web Management. The manipulation results in stack-based buffer overflow. The attack can be launched remotely. The exploit has been made public and could be used.
CVE-2026-77148
CRITICALPre-NVD 9.99.9—Trending — 4 sources updated this weekElevated
EchelonGraph scoreHIGH confidence
Score 9.9 from GitHub Security Advisory (severity: HIGH) published 2026-08-20. a secondary CVSS source baseline 9.9; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: ghsa, secondary
9.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 9.9Exploit: Elevated riskExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.9
- EG Score
- 9.9(high)
- EG Risk
- 61(Track*)EG Risk 61/100SSVC: 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 computedSeverity99% × 45%Exploitation40% × 40%Automatability0% × 15%Action: Watch closely — could escalate to Attend. - EPSS PROB
- —
- EPSS %ILE
- —
- KEV
- Not listed
Published
August 20, 2026
Last Modified
August 20, 2026
Advisory Details (1)
Auto-updated Aug 20, 2026🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available
Comfast CF-N1-S Router V2.6.0.1 Contains a Stack Overflow Vulnerability · Issue #7 · AdminSafe/CVE · GitHub
https://github.com/AdminSafe/CVE/issues/7Vendor Advisories for CVE-2026-77148(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 11× in last 7d / 11× 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.
- 2026-08-21 04:37 UTCGHSA enrichment
- 2026-08-21 00:27 UTCEG score recompute
- 2026-08-21 00:27 UTCGHSA enrichment
- 2026-08-20 20:20 UTCEG score recompute
- 2026-08-20 20:20 UTCNVD updateCVSS v4 → 8.6
- 2026-08-20 19:52 UTCEG score recompute
- 2026-08-20 19:51 UTCMITRE cvelistV5CVSS v4 → 9.4
- 2026-08-20 19:18 UTCEG score recompute
- 2026-08-20 19:17 UTCNVD updateCVSS v4 → 8.6
- 2026-08-20 18:22 UTCEG score recompute
- 2026-08-20 18:21 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Same CWE
10 shownCWE-119
- CVE-2003-0819EG 10.0EPSS p99HIGH
- CVE-2003-0903EG 10.0EPSS p98HIGH
- CVE-2003-1339EG 10.0EPSS p99HIGH
- CVE-2003-0095EG 10.0EPSS p96HIGH
- CVE-2002-2227EG 10.0HIGH
- CVE-2002-2248EG 10.0EPSS p93HIGH
- CVE-2002-2250EG 10.0EPSS p94HIGH
- CVE-2002-2251EG 10.0EPSS p93HIGH
- CVE-2002-2253EG 10.0EPSS p93HIGH
- CVE-2002-2257EG 10.0EPSS p92HIGH
Frequently asked(4)
What is CVE-2026-77148?
CVE-2026-77148 is a critical vulnerability published on August 20, 2026. A vulnerability was found in Comfast CF-N1-S 2.6.0.1. This impacts the function sub44B50C of the file /cgi-bin/mbox-config?method=SET§ion=ptestchannel of the component Web Management. The manipulation results in stack-based buffer overflow. The attack can be launched remotely. The exploit has…
When was CVE-2026-77148 disclosed?
CVE-2026-77148 was first published in the National Vulnerability Database on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-77148?
CVE-2026-77148 has a CVSS v3 base score of 9.9 (NVD).
How do I remediate CVE-2026-77148?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-77148, 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-2026-77148
Is Your Infrastructure Affected by CVE-2026-77148?
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