CVE-2026-18812: A flaw has been found in H3C NX15 V100R017

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HIGH 7.2

CVE-2026-18812 is a high-severity flaw (CVSS 7.2) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A flaw has been found in H3C NX15 V100R017. The impacted element is the function esps.ipv6.wan of the file /api/esps. Executing a manipulation of the argument workMode can lead to command injection. It is possible to launch the attack remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure.

Why this priority

High severity
CISA SSVC: public proof of concept

A fixed release or distro patch exists.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	3.6% (top 11%)
CISA exploited list	No
Weakness	CWE-74, CWE-77
Published	2026-08-04
Last modified	2026-10-23

Publisher (CNA): VulDB

Timeline

2026-08-04 21:16 UTCPublished CVE record published
2026-10-23 21:10 UTCUpdated Record last modified

Exact fixes by distribution

Fedora 46 · python-fontconfig · FIXED · 0.6.3-1.fc46 · FEDORA-2026-f92ca8b01f · source

sudo dnf upgrade --advisory=FEDORA-2026-f92ca8b01f

Fedora ELN · valgrind · FIXED · 3.28.0-1.eln159 · FEDORA-2026-c593ef1d15 · source

sudo dnf upgrade --advisory=FEDORA-2026-c593ef1d15

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: github.com/coconut652-7/IOT_Vul_Public/tree/main/H3C/NX15R017/esps_ipv6_wan_set_workmode_r

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Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

References

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