CVE-2026-92399

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.69% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 52.2% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/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

NVD analysis status

Deferred. NVD last modified this record on 2026-09-18.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-09-16 16:15Z1 MO AGO

Last updated

2026-09-18 18:09Z1 MO AGO

Reserved

2026-09-16

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 6.9)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Weaknesses

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass
• CWE-122Heap-based Buffer OverflowVariant

Data version

5.2

Document digest

6f26f51458aa767e8ddc263afa4f9a2abbd3051466a735630e03d7b5c9737eff

• vuldb.comVDB-405551 | GPAC WebSocket rmt_ws.c rmt_client_handle_ws_frame heap-based overflowhttps://vuldb.com/vuln/405551vdb-entrytechnical-description
• vuldb.comVDB-405551 | CTI Indicators (IOB, IOC, IOA)https://vuldb.com/vuln/405551/ctisignaturepermissions-required
• vuldb.comCVE-2026-92399 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-92399third-party-advisory
• vuldb.comSubmit #940250 | GPAC v26.07.0 (commit 2d7da22e) / master HEAD 6fed75df — fixed in 37bccbb Memory Corruption (CWE-122: Heap-based Buffer Overflow)https://vuldb.com/submit/940250third-party-advisory
• github.comhttps://github.com/gpac/gpac/issues/3860issue-tracking
• github.comhttps://github.com/user-attachments/files/31208030/poc_rmt_ws_malicious_frame.pyexploit
• github.comhttps://github.com/gpac/gpac/commit/37bccbb30cf53a0e1a084cea9a1ce422b3ddfe12patch
• github.comhttps://github.com/gpac/gpac/releases/tag/abi-16.26patch
• github.comhttps://github.com/gpac/gpac/product