PT-2026-5590 · Open5Gs · Open5Gs

Linziyu · Published 2026-02-02 · Updated 2026-02-02 · CVE-2026-1737

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, specifically within the sgwc s5c handle create bearer request function located in the /src/sgwc/s5c-handler.c file, part of the CreateBearerRequest Handler component. Manipulation of input can trigger a reachable assertion. Remote exploitation is possible. The issue is reported as already fixed and the exploit is publicly available.

Recommendations Deploy a patch to address this issue.

Exploit

Fix

Assertion Failure

Weakness Enumeration

CWE-617

Related Identifiers

CVE-2026-1737

Affected Products

Open5Gs

References · 12

• 🔥 https://github.com/open5gs/open5gs/issues/4271#issue-3795147720 · Exploit
• https://github.com/open5gs/open5gs/issues/4271 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-1737 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-1737 · Security Note
• https://github.com/open5gs/open5gs/issues/4271#event-21968630023 · Note
• https://github.com/open5gs/open5gs · Note
• https://vuldb.com/?submit.741192 · Note
• https://vuldb.com/?id.343636 · Note
• https://t.me/CVEtracker/43441 · Telegram Post
• https://t.me/cveNotify/150524 · Telegram Post
• https://twitter.com/VulmonFeeds/status/2018151467962515888 · Twitter Post
• https://vuldb.com/?ctiid.343636 · Note