CVE-2023-34567Public exploit

Memory corruption via crafted virtual-server list

Published Jun 8, 2023 · Updated Jan 6, 2025

Stack overflow in Tenda AC10 v4 firmware US_AC10V4.0si_V16.03.10.13_cn allows local users to corrupt memory via a crafted list value. The /goform/SetVirtualServerCfg handler processes the untrusted list parameter in a way that writes beyond a stack buffer; the exact copy operation is undisclosed. Exploitation requires local access and high privileges, and the resulting corruption can compromise data or interrupt the router.

CVSS severity6.7
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack overflow in Tenda AC10 v4 firmware US_AC10V4.0si_V16.03.10.13_cn allows local users to corrupt memory via a crafted list value. The /goform/SetVirtualServerCfg handler processes the untrusted list parameter in a way that writes beyond a stack buffer; the exact copy operation is undisclosed. Exploitation requires local access and high privileges, and the resulting corruption can compromise data or interrupt the router.

The record

CVE
CVE-2023-34567
Published
Jun 8, 2023
Updated
Jan 6, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jun 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 6, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.7CISA-ADPCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
6.7NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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