Security readout for executives and security teams
Plain-English summary
Comfast CF-N1-S firmware 2.6.0.1 contains a critical memory-safety flaw in its web management interface. A remote user with low-level privileges may trigger a stack buffer overflow, potentially compromising confidentiality, integrity, and availability. Public exploit material exists, but the supplied sources do not establish active exploitation.
Executive priority
Treat as an urgent containment and vendor-remediation issue for confirmed CF-N1-S 2.6.0.1 deployments. Prioritize internet-accessible or broadly reachable management interfaces. Public exploit availability raises near-term risk, although active exploitation is not established by the supplied evidence.
Technical view
The mbox-config handler for the ntp_timezone section passes attacker-controlled timestr or ntp_client_enabled input to sub_41AD7C, causing a stack-based buffer overflow. CVSS 3.1 is 9.9 with network reachability, low complexity, low privileges, no user interaction, scope change, and high impact across all security properties.
Likely exposure
Confirmed exposure is limited to Comfast CF-N1-S version 2.6.0.1. Risk is greatest where its web management interface is reachable by untrusted networks or accessible through weakly controlled accounts. The bundle does not identify other affected versions, deployment prevalence, or internet-exposure counts.
Exploitation context
Exploit details have been published, increasing the likelihood of attempted abuse. Successful exploitation reportedly requires low privileges and network access to the management interface. This CVE is not listed as KEV in the supplied bundle, and no cited source confirms exploitation in the wild.
Researcher notes
The reported weakness maps to CWE-119 and CWE-121. The vulnerable path is /cgi-bin/mbox-config with method SET and section ntp_timezone; implicated inputs are timestr and ntp_client_enabled. Evidence identifies sub_41AD7C but provides no vendor patch, safe version, root-cause code, or confirmed exploitation telemetry.
Mitigation direction
- Inventory CF-N1-S devices and prioritize those running version 2.6.0.1.
- Restrict web management access to trusted administrative networks and accounts.
- Remove direct internet exposure while remediation guidance is evaluated.
- Check Comfast guidance for patched firmware or vendor-approved mitigation.
- Monitor the affected management endpoint for unexpected or unauthorized requests.
Validation and detection
- Confirm each device model and installed firmware version through trusted inventory records.
- Verify whether the web management interface is reachable from untrusted networks.
- Review access controls for accounts permitted to use the management interface.
- Inspect logs for unusual requests targeting mbox-config and the ntp_timezone section.
- Confirm remediation against current Comfast guidance before restoring broader access.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-119: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCWE-121: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-78050 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
4 official scoresWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R3.16VulDBCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R3.16VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P——VulDBAV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR810VulDBVulnerability scoring details
Base CVSS 4.0 score
9.4CriticalVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
Base CVSS 3.1 score
9.9CriticalVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
Base CVSS 3.0 score
9.9CriticalVector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
Base CVSS 2.0 score
9CriticalVector: AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- Source timelineVulDB
Advisory disclosed
- Source timelineVulDB
VulDB entry created
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- Source timelineVulDB
VulDB entry last update
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- VDB-394291 | Comfast CF-N1-S Web Management mbox-config sub_41AD7C stack-based overflowCVE reference, VulDB · vdb-entry, technical-description
- VDB-394291 | CTI Indicators (IOB, IOC, IOA)CVE reference, VulDB · signature, permissions-required
- CVE-2026-78050 | CVE Analysis and ReportCVE reference, VulDB · third-party-advisory
- Submit #881293 | Comfast CF-N1-S V2.6.0.1 Buffer OverflowCVE reference, VulDB · third-party-advisory
- https://github.com/AdminSafe/CVE/issues/9CVE reference, VulDB · exploit, issue-tracking
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Restriction of Operations within the Bounds of a Memory Buffer
Improper Restriction of Operations within the Bounds of a Memory Buffer represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Stack-based Buffer Overflow
Stack-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.