CVE-2022-25596

Unauthenticated code execution via unchecked decryption length

Published Apr 7, 2022 · Updated Sep 17, 2024

Heap-based buffer overflow in the configuration function of ASUS RT-AC86U 3.0.0.4.386.45956 allows remote attackers to execute code. The function fails to validate the decryption parameter length before processing it, causing an out-of-bounds write in heap memory. Exploitation requires unauthenticated access from the local network and grants arbitrary code execution and service interruption on the router.

CVSS severity8.8
High
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in the configuration function of ASUS RT-AC86U 3.0.0.4.386.45956 allows remote attackers to execute code. The function fails to validate the decryption parameter length before processing it, causing an out-of-bounds write in heap memory. Exploitation requires unauthenticated access from the local network and grants arbitrary code execution and service interruption on the router.

The record

CVE
CVE-2022-25596
Published
Apr 7, 2022
Updated
Sep 17, 2024
Vendor
ASUSTeK Computer Inc.
Product
RT-AC86U
Classifications
CWE-787, T1210
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 7, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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=3.0.0.4.386.45956

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

ASUSTeK Computer Inc. · RT-AC86Uversion=3.0.0.4.386.45956

Published CVSS scores

5.8NIST NVDAV:A/AC:L/Au:N/C:P/I:P/A:P
8.8TWCERT/CCCVSS:3.1/AV:A/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

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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