CVE-2026-75895: Out of bounds read at smpp34_unpack()

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-18 · updated 2026-09-30
Weakness: CWE-125

Description

In libsmpp35 from 0.1.0 through 1.8.0 out of bound read issue was found in the at smpp34_unpack() function via attacker controlled SMPP PDUs, leading to memory corruption.

Affected products

Osmocom libsmpp34: from 1.10.0 before 1.14.5 — fixed in 1.14.5

How to fix

Upgrade to a fixed version: Osmocom libsmpp34 1.14.5. Check the vendor advisory for mitigations.

References

https://cgit.osmocom.org/libsmpp34/commit/?id=af0e2912057551dab97bbe26e6a41f18a75f3bbb
https://lists.debian.org/debian-lts-announce/2026/09/msg00038.html

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