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CVE-2026-75893— Heap based buffer overflow at ipaccess_proxy_read_msg()

Quick assessment

Affected
Osmocom osmo-bsc
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

In osmo-bsc from 1.0.1 through 1.14.1 a heap based buffer overflow issue was found in the ipaccess_proxy_read_msg() function via IPA frame lengths.

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Osmocom osmo-bsc 1.0.1< 1.14.1 affected
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I. Basic Information for CVE-2026-75893

Vulnerability Information

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Vulnerability Title
Heap based buffer overflow at ipaccess_proxy_read_msg()
Source: CVE Program / CVE List V5
Vulnerability Description
In osmo-bsc from 1.0.1 through 1.14.1 a heap based buffer overflow issue was found in the ipaccess_proxy_read_msg()  function via IPA frame lengths.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Osmocom osmo-bsc 1.0.1 ~ 1.14.1 -

II. Public POCs for CVE-2026-75893

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III. Intelligence Information for CVE-2026-75893

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Patches & Fixes for CVE-2026-75893 (1)

Same Patch Batch · Osmocom · 2026-09-18 · 4 CVEs total

CVE-2026-75892 Out of bounds write in PDP ctx GSN-Address decode
CVE-2026-75895 Out of bounds read at smpp34_unpack()
CVE-2026-75894 Reachable assertion at ranap_handle_co_dt()

IV. Related Vulnerabilities

Same vendor: Osmocom
Same weakness: CWE-122

V. Comments for CVE-2026-75893

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