CVE-2022-39829Network attack vector

Unauthenticated denial of service via aes256_encrypt

Published Sep 5, 2022 · Updated Aug 3, 2024

NULL pointer dereference in Samsung mTower through 0.3.0 allows remote attackers to cause service interruption via network requests. The aes256_encrypt function uses the return value of EVP_CIPHER_CTX_new without checking for NULL, then dereferences the invalid context during encryption. A remote unauthenticated request that reaches this code path can crash or interrupt the service; confidentiality and data integrity impacts are not reported.

CVSS severity7.5
High
EPSS probability1.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Samsung mTower through 0.3.0 allows remote attackers to cause service interruption via network requests. The aes256_encrypt function uses the return value of EVP_CIPHER_CTX_new without checking for NULL, then dereferences the invalid context during encryption. A remote unauthenticated request that reaches this code path can crash or interrupt the service; confidentiality and data integrity impacts are not reported.

The record

CVE
CVE-2022-39829
Published
Sep 5, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 5, 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

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 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-476NULL Pointer Dereference
T1499Endpoint Denial of Service

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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