CVE-2025-1899Public exploitNetwork attack vector

Authenticated service interruption via oversized PPTP user list

Published Mar 4, 2025 · Updated Mar 4, 2025

Buffer overflow in Tenda TX3 16.03.13.11_multi allows remote authenticated users to crash the router via a crafted PPTP user list. The /goform/setPptpUserList handler copies the untrusted list parameter without adequately restricting its length, overrunning a memory buffer. Access to the management interface and a valid session are required; successful exploitation interrupts router availability.

CVSS severity7.1
High
EPSS probability0.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in Tenda TX3 16.03.13.11_multi allows remote authenticated users to crash the router via a crafted PPTP user list. The /goform/setPptpUserList handler copies the untrusted list parameter without adequately restricting its length, overrunning a memory buffer. Access to the management interface and a valid session are required; successful exploitation interrupts router availability.

The record

CVE
CVE-2025-1899
Published
Mar 4, 2025
Updated
Mar 4, 2025
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
TX3
Classifications
CWE-119, CWE-120, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 4, 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?

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

  1. Affected versionversion=16.03.13.11_multi

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · TX3version=16.03.13.11_multi

Published CVSS scores

6.8VulDBAV:N/AC:L/Au:S/C:N/I:N/A:C
6.5VulDBCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
6.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1499Endpoint Denial of Service

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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