PT-2026-5597 · Open5Gs · Open5Gs

Ziyulin · Published 2026-02-02 · Updated 2026-02-02 · CVE-2026-1738

Positive Technologies (AI Summary)

CVSS v4.0

5.5

Medium

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Name of the Vulnerable Software and Affected Versions Open5GS versions up to 2.7.6

Description A flaw exists in Open5GS up to version 2.7.6, specifically within the SGWC component. The issue resides in the sgwc tunnel add function located in the /src/sgwc/context.c file. Manipulation of the pdr argument can trigger a reachable assertion, and the attack can be executed remotely. An exploit for this issue has been published.

Recommendations Versions prior to 2.7.6 should be updated.

Exploit

Fix

Assertion Failure

Weakness Enumeration

CWE-617

Related Identifiers

CVE-2026-1738

Affected Products

Open5Gs

References · 11

• 🔥 https://github.com/open5gs/open5gs/issues/4261#issue-3787803578 · Exploit
• 🔥 https://github.com/open5gs/open5gs/issues/4261 · Exploit
• https://osv.dev/vulnerability/CVE-2026-1738 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-1738 · Security Note
• https://github.com/open5gs/open5gs/issues/4261#event-21968563677 · Note
• https://vuldb.com/?id.343637 · Note
• https://vuldb.com/?submit.741193 · Note
• https://t.me/CVEtracker/43442 · Telegram Post
• https://github.com/open5gs/open5gs · Note
• https://vuldb.com/?ctiid.343637 · Note
• https://t.me/cveNotify/150525 · Telegram Post