CVE-2026-2537
CVE-2026-2537 is a medium-severity vulnerability in Comfast Cf-e4 Firmware with a CVSS 3.x base score of 4.7. Its EPSS exploit-prediction score of 20% places it in the 97th 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: 20% (97th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-6124
- Weakness: CWE-77
- Affected product: Comfast Cf-e4 Firmware
- Published:
- Last modified:
Description
A vulnerability was identified in Comfast CF-E4 2.6.0.1. This impacts an unknown function of the file /cgi-bin/mbox-config?method=SET§ion=ntp_timezone of the component HTTP POST Request Handler. Such manipulation of the argument timestr leads to command injection. The attack may be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
Frequently asked questions
- What is CVE-2026-2537?
- A vulnerability was identified in Comfast CF-E4 2.6.0.1. This impacts an unknown function of the file /cgi-bin/mbox-config?method=SET§ion=ntp_timezone of the component HTTP POST Request Handler. Such manipulation of the argument timestr leads to command injection. The attack may be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
- How severe is CVE-2026-2537?
- CVE-2026-2537 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-2026-2537 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 20% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-2537?
- CVE-2026-2537 affects Comfast Cf-e4 Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-2537?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-2537 have an EU (EUVD) identifier?
- Yes. CVE-2026-2537 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6124.
- When was CVE-2026-2537 published?
- CVE-2026-2537 was published on 2026-02-16 and last updated on 2026-06-17.
References
- https://github.com/cha0yang1/COMFAST/blob/main/RCE.md
- https://vuldb.com/?ctiid.346125
- https://vuldb.com/?id.346125
- https://vuldb.com/?submit.749196
Affected products (1)
- cpe:2.3:o:comfast:cf-e4_firmware:2.6.0.1:*:*:*:*:*:*:*
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