CVE-2022-25431Network attack vector

Unauthenticated memory corruption via QoS parameter overflows

Published Mar 18, 2022 · Updated Aug 3, 2024

Stack overflows in Tenda AC9 firmware 15.03.2.21 allow remote attackers to corrupt process memory through crafted QoS parameters. Processing the NPTR, V12, V10, and V11 parameters in Formsetqosband overruns stack storage; public evidence does not identify the specific copy operation. The network path requires no authentication or user interaction, but public sources do not establish whether the corruption produces a crash or controlled execution.

CVSS severity9.8
Critical
EPSS probability1.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack overflows in Tenda AC9 firmware 15.03.2.21 allow remote attackers to corrupt process memory through crafted QoS parameters. Processing the NPTR, V12, V10, and V11 parameters in Formsetqosband overruns stack storage; public evidence does not identify the specific copy operation. The network path requires no authentication or user interaction, but public sources do not establish whether the corruption produces a crash or controlled execution.

The record

CVE
CVE-2022-25431
Published
Mar 18, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0NIST NVDAV:N/AC:L/Au:N/C:C/I:C/A:C

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write

Public exploit references

No public exploit references are available in this record.

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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