CVE-2026-3798
CVE-2026-3798 is a medium-severity vulnerability in Comfast Cf-ac100 Firmware with a CVSS 3.x base score of 4.7. Its EPSS exploit-prediction score of 13% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-77.
Key facts
- Severity: Medium (CVSS 3.x base score 4.7)
- CVSS v2: 5.8
- CVSS v4: 2.0
- EPSS exploit prediction: 13% (96th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-10290
- Weakness: CWE-77
- Affected product: Comfast Cf-ac100 Firmware
- Published:
- Last modified:
Description
A vulnerability was detected in Comfast CF-AC100 2.6.0.8. This affects the function sub_44AC14 of the file /cgi-bin/mbox-config?method=SET§ion=ping_config of the component Request Path Handler. The manipulation results in command injection. The attack may be launched remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Frequently asked questions
- What is CVE-2026-3798?
- A vulnerability was detected in Comfast CF-AC100 2.6.0.8. This affects the function sub_44AC14 of the file /cgi-bin/mbox-config?method=SET§ion=ping_config of the component Request Path Handler. The manipulation results in command injection. The attack may be launched remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
- How severe is CVE-2026-3798?
- CVE-2026-3798 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
- Is CVE-2026-3798 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 13% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-3798?
- CVE-2026-3798 affects Comfast Cf-ac100 Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-3798?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-3798 have an EU (EUVD) identifier?
- Yes. CVE-2026-3798 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10290.
- When was CVE-2026-3798 published?
- CVE-2026-3798 was published on 2026-03-09 and last updated on 2026-06-17.
References
- https://github.com/jinhao118/cve/blob/main/ComFast%20CF-AC100-V2.6.0.8_1.md
- https://vuldb.com/?ctiid.349765
- https://vuldb.com/?id.349765
- https://vuldb.com/?submit.766443
Affected products (1)
- cpe:2.3:o:comfast:cf-ac100_firmware:2.6.0.8:*:*:*:*:*:*:*
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