CVE-2026-3701
CVE-2026-3701 is a high-severity vulnerability in H3c Magic B1 Firmware with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v2: 9.0
- CVSS v4: 7.4
- EPSS exploit prediction: 1% (65th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-10209
- Weakness: CWE-119
- Affected product: H3c Magic B1 Firmware
- Published:
- Last modified:
Description
A security vulnerability has been detected in H3C Magic B1 up to 100R004. Affected by this vulnerability is the function Edit_BasicSSID_5G of the file /goform/aspForm. Such manipulation of the argument param leads to buffer overflow. The attack can be executed remotely. The exploit has been disclosed publicly 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-2026-3701?
- A security vulnerability has been detected in H3C Magic B1 up to 100R004. Affected by this vulnerability is the function Edit_BasicSSID_5G of the file /goform/aspForm. Such manipulation of the argument param leads to buffer overflow. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
- How severe is CVE-2026-3701?
- CVE-2026-3701 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-3701 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-3701?
- CVE-2026-3701 affects H3c Magic B1 Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-3701?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-3701 have an EU (EUVD) identifier?
- Yes. CVE-2026-3701 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10209.
- When was CVE-2026-3701 published?
- CVE-2026-3701 was published on 2026-03-08 and last updated on 2026-06-17.
References
- https://github.com/saltedfisholdxu/vul/blob/main/Magic%20B1/6_b1-report.md
- https://vuldb.com/?ctiid.349647
- https://vuldb.com/?id.349647
- https://vuldb.com/?submit.765771
Affected products (1)
- cpe:2.3:o:h3c:magic_b1_firmware:*:*:*:*:*:*:*:*
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