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CVE-2026-15907 H3C CVE debrief

A SQL injection vulnerability has been identified in H3C SecPath F1000-C8300 up to version 20260522. The vulnerability affects an unknown function of the file /webui/?g=log_fw_nbc_mail_jsondata. By manipulating the 'subject' argument, an attacker can execute a SQL injection attack remotely. The exploit for this vulnerability has been made public and may be used by malicious actors. The vendor, H3C, was notified early about this disclosure and has confirmed the existence of the vulnerability. A technical fix is planned to be released.

Vendor
H3C
Product
SecPath F1000-C8300
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-16
Original CVE updated
2026-07-16
Advisory published
2026-07-16
Advisory updated
2026-07-16

Who should care

This vulnerability affects H3C SecPath F1000-C8300 devices up to version 20260522. Users of these devices should be aware of the potential risk and take necessary precautions to protect their systems.

Technical summary

The vulnerability is caused by improper input validation in the 'subject' argument of the /webui/?g=log_fw_nbc_mail_jsondata file in H3C SecPath F1000-C8300 up to version 20260522. This allows an attacker to inject malicious SQL code, potentially leading to unauthorized access to sensitive data or disruption of service. The attack can be executed remotely and has been made public. The vendor, H3C, has confirmed the existence of the vulnerability and is planning a technical fix.

Defensive priority

Medium

Recommended defensive actions

  • Apply the planned technical fix from the vendor as soon as it is available.
  • Restrict access to the /webui/?g=log_fw_nbc_mail_jsondata file to only necessary personnel.
  • Monitor system logs for suspicious activity.
  • Implement additional security measures, such as web application firewalls, to detect and prevent SQL injection attacks.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review.
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record was published on 2026-07-16T00:16:19.170Z and was last modified on 2026-07-16T16:19:00.980Z. The NVD entry is currently Deferred. The vendor, H3C, has confirmed the existence of the vulnerability and is planning a technical fix.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-15907 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-15907

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-15907 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-15907

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.