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TI-2026-07702 Aliases CVE-2026-8764GHSA-fgq5-p2r5-jrm5

H3C Magic B3 aspForm UpdateWanParams buffer overflow

Priority HIGH 72CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

A security vulnerability has been detected in H3C Magic B3 up to 100R002. This affects the function UpdateWanParams of the file /goform/aspForm. Such manipulation of the argument param leads to buffer overflow. The attack may be performed from remote. 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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0048 41st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
H3CMagic B3100R002—No fix listedCNA
  • Magic B3 VendorH3C Affected 100R002 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:h3c:magic_b3:*:*:*:*:*:*:*:*——H3C
  • cpe:2.3:a:h3c:magic_b3:*:*:*:*:*:*:*:* Versions — — ·H3C

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-8764
  2. 2026-10-03 Alias added: GHSA-fgq5-p2r5-jrm5
  3. 2026-10-25 EPSS moved to the below the 50th percentile

References

Exploit 1

  • TI-2025-37618 An issue in H3C M102G HM1A0V200R010 wireless controller and BA1500L SWBA1A0V100R006… CVSS 3.1CRITICAL 9.8
  • TI-2024-35290 H3C GR-1800AX MiniGRW1B0V100R007 is vulnerable to remote code execution (RCE) via the aspForm parameter. CVSS 3.1CRITICAL 9.8
  • TI-2024-28559 H3C GR1100-P v100R009 was discovered to use a hardcoded password in /etc/shadow, which… CVSS 3.1CRITICAL 9.8
  • TI-2024-28557 H3C R3010 v100R002L02 was discovered to contain a hardcoded password vulnerability in… CVSS 3.1CRITICAL 9.8
  • TI-2023-13966 H3C GR-1200W MiniGRW1A0V100R006 was discovered to contain a stack overflow via the function version_set. CVSS 3.1CRITICAL 9.8
  • TI-2023-13965 H3C GR-1200W MiniGRW1A0V100R006 was discovered to contain a stack overflow via the function set_tftp_upgrad. CVSS 3.1CRITICAL 9.8
See all 228 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences