CVE-2023-29090Network attack vector

Remote modem interruption via SIP Via-header overflow

Published Apr 14, 2023 · Updated Feb 7, 2025

Memory corruption in Samsung Exynos SIP Via-header decoding allows remote attackers to interrupt affected modem operation via crafted SIP traffic. The Shannon baseband Via-header decoder insufficiently validates header parameters, allowing decoded values to overrun a stack buffer. Network delivery requires no authentication or user interaction, but triggering is high-complexity and the documented consequence is modem-service interruption.

CVSS severity6.8
Medium
EPSS probability0.75%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in Samsung Exynos SIP Via-header decoding allows remote attackers to interrupt affected modem operation via crafted SIP traffic. The Shannon baseband Via-header decoder insufficiently validates header parameters, allowing decoded values to overrun a stack buffer. Network delivery requires no authentication or user interaction, but triggering is high-complexity and the documented consequence is modem-service interruption.

The record

CVE
CVE-2023-29090
Published
Apr 14, 2023
Updated
Feb 7, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 7, 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?

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

6.8MITRECVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
7.5NIST NVDCVSS: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-787Out-of-bounds Write
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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