CVE-2026-78156CWE-119CWE-122

CVE-2026-78156

High · published August 24, 2026

CVSS v3.1
7.4
EPSS
1%
Percentile
45.9
In the wild
Unconfirmed
What it is

A security vulnerability has been detected in Open5GS 2.8.0. Affected by this issue is the function hss_ogs_diam_s6a_air_cb of the file src/hss/hss-s6a-path.c of the component S6a Authentication-Information-Request Handler. Such manipulation of the argument Visited-PLMN-Id leads to heap-based buffer overflow. The attack may be performed from remote. The name of the patch is a9c82ee0b590d76a581b0580cb46b598984e2392. A patch should be applied to remediate this issue.

The record
Technical detail
CVSS v3.1
7.4 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
CVSS v4.0
5.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P
EPSS
0.00561 · 45.9th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-122 · Heap-based Buffer Overflow
Published
2026-08-24T04:16Z
References (7)
https://github.com/open5gs/open5gs/ · [email protected]https://github.com/open5gs/open5gs/commit/a9c82ee0b590d76a581b0580cb46b598984e2392 · [email protected]https://github.com/open5gs/open5gs/issues/4661 · [email protected]https://vuldb.com/cve/CVE-2026-78156 · [email protected]https://vuldb.com/submit/882951 · [email protected]https://vuldb.com/vuln/394539 · [email protected]https://vuldb.com/vuln/394539/cti · [email protected]
EPSS history
Timeline
  • 27 AUG 06:46Z
    EPSS moved — → 0%
    epss
  • 23 AUG 23:45Z
    Open5GS S6a Authentication-Information-Request hss-s6a-path.c hss_ogs_diam_s6a_air_cb heap-based overflow
    cvelistv5