PT-2026-3405 · Open5Gs · Open5Gs

Frankylin · Published 2026-01-18 · Updated 2026-02-10 · CVE-2025-15539

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Open5GS versions through 2.7.6

Description A flaw exists in Open5GS that can lead to a denial of service. The issue is located in the sgwc s11 handle downlink data notification ack function within the src/sgwc/s11-handler.c file of the sgwc component. The attack can be initiated remotely and has been publicly disclosed.

Recommendations Deploy the patch b4707272c1caf6a7d4dca905694ea55557a0545f.

Exploit

Fix

DoS

Improper Resource Release

Weakness Enumeration

CWE-404

Related Identifiers

CVE-2025-15539

Affected Products

Open5Gs

References · 12

• 🔥 https://github.com/open5gs/open5gs/issues/4230#issue-3774173079 · Exploit
• https://github.com/open5gs/open5gs/commit/b4707272c1caf6a7d4dca905694ea55557a0545f · Patch
• https://github.com/open5gs/open5gs/issues/4230 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-15539 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-15539 · Security Note
• https://twitter.com/VulmonFeeds/status/2013052819830444340 · Twitter Post
• https://t.me/cveNotify/151588 · Telegram Post
• https://vuldb.com/?id.341732 · Note
• https://vuldb.com/?ctiid.341732 · Note
• https://github.com/open5gs/open5gs · Note
• https://vuldb.com/?submit.735339 · Note
• https://twitter.com/CVEnew/status/2013036718895550711 · Twitter Post