Is CVE-2026-75892 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-75892 being exploited in the wild.

How severe is CVE-2026-75892?

Medium severity, with a CVSS score of 6.5, published 18 September 2026.

Which products and versions are affected?

Osmocom Osmo-Ggsn 1.14.0; Osmocom Osmo-Sgsn .

Is there a fix for CVE-2026-75892?

A patch was published on 2026-08-12: Fix committed to osmo-ggsn repository Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-75892 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-75892?

Check whether you run Osmocom Osmo-Ggsn or Osmocom Osmo-Sgsn at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-75892: osmo-ggsn out-of-bounds write in PDP context GSN-Address decode

CVE-2026-75892 · Severity: medium · CVSS 6.5 · Published 2026-09-18

osmo-ggsn is a GPRS gateway node that routes mobile data traffic between cellular networks and the internet. A memory corruption flaw in PDP context processing allows a malicious peer network node to crash the gateway or potentially execute code by sending specially crafted network messages.

Vendors: Osmocom.

Quick answers

Is CVE-2026-75892 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-75892 being exploited in the wild.
How severe is CVE-2026-75892?: Medium severity, with a CVSS score of 6.5, published 18 September 2026.
Which products and versions are affected?: Osmocom Osmo-Ggsn 1.14.0; Osmocom Osmo-Sgsn <UNKNOWN>.
Is there a fix for CVE-2026-75892?: A patch was published on 2026-08-12: Fix committed to osmo-ggsn repository Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-75892 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-75892?: Check whether you run Osmocom Osmo-Ggsn or Osmocom Osmo-Sgsn at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The gtp_decode_pdp_ctx() function in osmo-ggsn and osmo-sgsn's libgtp library fails to validate GSN-Address sub-field lengths against the 16-byte destination buffer before performing memcpy(), allowing lengths up to 255 bytes from the wire to overflow the fixed array. The vulnerability is exploitable over the Gn/Gp interface by a malicious or spoofed peer GSN through SGSN Context Response or Forward Relocation messages. A fix validating lengths against destination capacity is available.

Affected products

osmocom osmo-ggsn 1.14.0
osmocom osmo-sgsn <UNKNOWN>

Timeline

2026-09-18: disclosed
2026-08-12: patched: Fix committed to osmo-ggsn repository

References

https://cgit.osmocom.org/osmo-ggsn/commit/?id=6c322f4dd339401a437da3c89c95f2bf64bca995

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