CVE-2023-41553Public exploitNetwork attack vector

Unauthenticated memory corruption via static-route list overflow

Published Aug 30, 2023 · Updated Oct 1, 2024

Stack-based buffer overflow in Tenda AC9 3.0 V15.03.06.42_multi and AC5 1.0RTL_V15.03.06.28 allows remote attackers to interrupt service. The fromSetRouteStatic handler processes attacker-controlled list data in fixed-size stack storage without enforcing a length bound. No authentication or user interaction is required; overflowing the handler can crash the management service and corrupt execution state.

CVSS severity9.8
Critical
EPSS probability0.84%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Tenda AC9 3.0 V15.03.06.42_multi and AC5 1.0RTL_V15.03.06.28 allows remote attackers to interrupt service. The fromSetRouteStatic handler processes attacker-controlled list data in fixed-size stack storage without enforcing a length bound. No authentication or user interaction is required; overflowing the handler can crash the management service and corrupt execution state.

The record

CVE
CVE-2023-41553
Published
Aug 30, 2023
Updated
Oct 1, 2024
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
AC9
Classifications
CWE-787, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 30, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 1, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.0_v15.03.06.42_multi

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · AC9version=3.0_v15.03.06.42_multi
Shenzhen Tenda Technology Co., Ltd. · AC5version=1.0rtl_v15.03.06.28

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1210Exploitation of Remote Services

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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