TI-2026-80460 Aliases CVE-2026-116543 GHSA-wvpv-4m2j-8jmq

Heap out-of-bounds write in Open5GS SBI multipart parser

HIGH 77CWE-787Published 2026-10-26 · Updated 2026-11-02

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

Open5GS from 1.3.0 through 2.8.0 contains a heap out-of-bounds write in parse_multipart() (CWE-787). Supplying an empty multipart boundary causes memory to be written past the lookbehind buffer. An unauthenticated remote attacker can send one crafted multipart/related request to the SBI interface of any network function, corrupting memory and crashing it.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Description from the CNA

Open5GS 1.3.0 through 2.8.0 contains a heap out-of-bounds write vulnerability in parse_multipart() that allows unauthenticated attackers to corrupt memory by supplying an empty multipart boundary. Attackers can send a single crafted multipart/related request to the SBI interface of any network function, overflowing the lookbehind buffer and crashing it.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00387 32nd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Open5GS	open5gs	1.3.0 – 2.8.0	—	No fix listed	CNA

open5gs VendorOpen5GS Affected 1.3.0 – 2.8.0 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:open5gs:open5gs::::::::	—	—	Open5GS

cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:* Versions — — ·Open5GS

Remediation

The sources list no fixed version for Open5GS.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Timeline

2026-10-26 Threatist record created from CVE-2026-116543
2026-10-27 Alias added: GHSA-wvpv-4m2j-8jmq
2026-10-27 Priority changed: MEDIUM → LOW
2026-11-02 CISA SSVC decision points changed
2026-11-02 Priority changed: LOW → HIGH

References

Patch 1

Patch Commit

Advisory 1

GitHub Security Advisory (GHSA-25v2-v588-jq8g)

Other 3

TI-2024-26883 open5gs v2.6.4 is vulnerable to Buffer Overflow. CVSS 3.1CRITICAL 9.8
TI-2024-26882 Open5GS v2.6.4 is vulnerable to Buffer Overflow. CVSS 3.1CRITICAL 9.8
TI-2024-22649 Open5GS MME versions <= 2.6.4 contains an assertion that can be remotely triggered via a… CVSS 3.1HIGH 8.6
TI-2023-18757 Open5GS MME versions <= 2.6.4 contain a reachable assertion in the `Uplink NAS Transport`… CVSS 3.1HIGH 8.6
TI-2023-18755 Open5GS MME version <= 2.6.4 contains an assertion that can be remotely triggered via a… CVSS 3.1HIGH 8.6
TI-2023-18754 Open5GS MME versions <= 2.6.4 contain an assertion that can be remotely triggered via a… CVSS 3.1HIGH 8.6

See all 159 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences