VDB-407707 · CVE-2026-75892 · GCVE-0-2026-75892

Osmocom osmo-ggsn up to 1.14.0 gtp_decode_pdp_ctx out-of-bounds write

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.6	$0-$5k	0.78

Summaryinfo

A vulnerability classified as very critical has been found in Osmocom osmo-ggsn up to 1.14.0. This vulnerability affects the function gtp_decode_pdp_ctx. This manipulation causes out-of-bounds write. This vulnerability is tracked as CVE-2026-75892. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Osmocom osmo-ggsn up to 1.14.0. It has been declared as very critical. Affected by this vulnerability is the function gtp_decode_pdp_ctx. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In osmo-ggsn 1.14.0 an out of bounds write issue was found in the gtp_decode_pdp_ctx() function through the PDP context GSN-Address sub-field, leading to memory corruption.

It is possible to read the advisory at cgit.osmocom.org. This vulnerability is known as CVE-2026-75892 since 08/18/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/18/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Osmocom

Name

osmo-ggsn

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.9
VulDB Temp Score: 9.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/18/2026 CVE reserved
09/18/2026 +31 days Advisory disclosed
09/18/2026 +0 days VulDB entry created
09/18/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: cgit.osmocom.org
Status: Not defined

CVE: CVE-2026-75892 (🔒)
GCVE (CVE): GCVE-0-2026-75892
GCVE (VulDB): GCVE-100-407707

Entryinfo

Created: 09/18/2026 20:49
Changes: 09/18/2026 20:49 (54)
Complete: 🔍
Cache ID: 216::103