PT-2026-39544 · Open5Gs · Open5Gs

Franklin · Published 2026-05-10 · Updated 2026-05-10 · CVE-2026-8251

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Open5GS versions prior to 2.7.8

Description A remote denial of service issue exists in the SMF component. The flaw is located in the update authorized pcc rule and qos() function within the /src/smf/npcf-handler.c file. Manipulation of this function allows a remote attacker to cause a system crash or unavailability.

Recommendations As a temporary workaround, restrict access to the update authorized pcc rule and qos() function in the SMF component to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Improper Resource Release

Weakness Enumeration

CWE-404

Related Identifiers

CVE-2026-8251

Affected Products

Open5Gs

References · 7

• 🔥 https://github.com/open5gs/open5gs/issues/4445 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-8251 · Security Note
• https://vuldb.com/submit/808480 · Note
• https://vuldb.com/vuln/362548 · Note
• https://vuldb.com/vuln/362548/cti · Note
• https://twitter.com/VulmonFeeds/status/2053621116703326432 · Twitter Post
• https://github.com/open5gs/open5gs · Note