CVE-2023-29089Network attack vector

Service interrupt via negative-size multipart memcpy

Published Apr 14, 2023 · Updated Feb 7, 2025

Memory corruption in Samsung Exynos modem SIP decoding allows remote attackers to interrupt baseband service via multipart messages. IMSPL_SipFragDecode passes a negative body-length value to memcpy, causing an out-of-bounds read and heap overwrite during body decoding. No authentication or user interaction is required, but the crafted multipart body must reach the modem SIP processing path.

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 modem SIP decoding allows remote attackers to interrupt baseband service via multipart messages. IMSPL_SipFragDecode passes a negative body-length value to memcpy, causing an out-of-bounds read and heap overwrite during body decoding. No authentication or user interaction is required, but the crafted multipart body must reach the modem SIP processing path.

The record

CVE
CVE-2023-29089
Published
Apr 14, 2023
Updated
Feb 7, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-125, T1499
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

7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
6.8MITRECVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/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-125Out-of-bounds Read
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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