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CVE-2026-8226

📛 CVE Title

Open5GS types.c ogs_pcc_rule_install_flow_from_media denial of service

⬇ Download JSON ⚠ View as Threat

Description

A security flaw has been discovered in Open5GS up to 2.7.7. This vulnerability affects the function ogs_pcc_rule_install_flow_from_media in the library /lib/proto/types.c. The manipulation results in denial of service. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

Overview

State
PUBLISHED
Assigner (CNA)
VulDB
CVSS severity
MEDIUM
CVSS score
CVSS 6.9 / 10 6.9 6.9 / 10
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Effective score
6.9 / 10 MEDIUM source: CNA overview
CWE(s)
CWE-404
Reserved
2026-05-09
Published
2026-05-10 05:30 UTC
Last updated
2026-05-11 17:06 UTC
Source
https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/8xxx/CVE-2026-8226.json
Linked Threat
CVE-2026-8226 — CVE-2026-8226

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published
2026-05-10 05:16:12 UTC
NVD last modified
2026-05-12 17:38:05 UTC
NVD CVSS v3.1
CVSS 5.3 / 10 5.3 5.3 / 10 MEDIUM source: cna@vuldb.com
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Exploitability subscore
3.9 / 10
Impact subscore
1.4 / 10
EPSS score
0.0008 (probability of exploitation in next 30 days)
EPSS percentile
23.80% vs all CVEs — higher = more likely to be exploited, as of 2026-05-24

NVD / KEV / EPSS data refreshed 2026-05-25 06:20 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID
EUVD-2026-28974
Assigner
VulDB
Published
May 10, 2026, 3:30:10 AM
Updated
May 11, 2026, 3:06:01 PM
EUVD base score (CVSS 4.0)
6.9 / 10
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
EUVD-reported EPSS
0.0800
Vendors
n/a
Products
Open5GS (2.7.1)
Open5GS (2.7.0)
Open5GS (2.7.7)
Open5GS (2.7.4)
Open5GS (2.7.3)
Open5GS (2.7.5)
Open5GS (2.7.6)
Open5GS (2.7.2)

ENISA description: A security flaw has been discovered in Open5GS up to 2.7.7. This vulnerability affects the function ogs_pcc_rule_install_flow_from_media in the library /lib/proto/types.c. The manipulation results in denial of service. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

EUVD references (5)

Affected products (1)
VendorProductVersionsPlatforms
n/a Open5GS 2.7.0 (affected), 2.7.1 (affected), 2.7.2 (affected), 2.7.3 (affected), 2.7.4 (affected), 2.7.5 (affected), 2.7.6 (affected), 2.7.7 (affected) —

Affected products — CPE 2.3 (1) NVD

NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.

  • cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*

Vendor references (5)

References embedded in the original CVE record by the assigning CNA.

MITRE references (5) cveawg.mitre.org

Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.

Web references (3)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

NVD-tagged references (5)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

Remediations (17)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

  • Microsoft Patch Tuesday March 2026 - 78 Vulnerabilities Fixed ...
    web:cybersecuritynews.com

    Microsoft released its March 2026 Patch Tuesday security update on March 10, 2026 , addressing 78 vulnerabilities across Windows, Microsoft Office, Azure, SQL Server, and .NET. The update includes one actively exploited zero-day vulnerability and multiple Critical-rated flaws demanding immediate attention from security teams. The most urgent fix this month is CVE - 2026 -21262, the sole zero-day ...

    2026-05-23 21:03 UTC
  • CISA Orders Patch for Sixth Cisco SD-WAN Zero-Day of 2026
    web:dailysecurityreview.com

    Cisco confirmed active exploitation of CVE - 2026 -20182, a CVSS 10.0 authentication bypass in SD-WAN, as CISA gave federal agencies three days to patch .

    2026-05-23 21:03 UTC
  • Patch Tuesday, May 2026 Edition - Krebs on Security
    web:krebsonsecurity.com

    Microsoft expects that exploitation is more likely. May's Patch Tuesday is a welcome respite from April, which saw Microsoft fix a near-record 167 security flaws.

    2026-05-23 21:03 UTC
  • Security Update Guide - Microsoft
    web:portal.msrc.microsoft.com

    The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.

    2026-05-23 21:03 UTC
  • Critical Patches Issued for Microsoft Products, April 14, 2026
    web:www.cisecurity.org

    <p>Multiple vulnerabilities have been discovered in Microsoft products, the most severe of which could allow for remote code execution. Successful exploitation of the most severe of these vulnerabilities could result in an attacker gaining the same privileges as the logged-on user. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or ...

    2026-05-23 21:03 UTC
  • April 2026 Patch Tuesday: Updates and Analysis | CrowdStrike
    web:www.crowdstrike.com

    Microsoft's April 2026 Patch Tuesday addresses 164 CVEs , featuring 8 Critical vulnerabilities, one exploited zero-day, and one disclosed zero-day.

    2026-05-23 21:03 UTC
  • Oracle Critical Patch Update Advisory - April 2026
    web:www.oracle.com

    This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

    2026-05-23 21:03 UTC
  • Quantifying 2026 Routinely Targeted Vulnerabilities (So Far)
    web:www.vulncheck.com

    VulnCheck identified 25 CVEs disclosed in 2026 that have been routinely targeted by adversaries and researchers so far this year, drawing from a global body of exploit code and exploitation data.

    2026-05-23 21:03 UTC
  • Windows 11 April 2026 Update tested: What's new, improved and fixed
    web:www.windowslatest.com

    Windows 11 April 2026 update adds Narrator Copilot support, faster Settings, File Explorer fixes, and key security improvements.

    2026-05-23 21:03 UTC
  • Patch Tuesday May 2026: Security Updates & CVE Analysis
    web:zecurit.com

    Get the complete breakdown of Microsoft's May 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .

    2026-05-23 21:03 UTC
  • Ongoing exploitation of Cisco Catalyst SD-WAN vulnerabilities
    web:blog.talosintelligence.com

    Cisco Talos is tracking the active exploitation of CVE - 2026 -20182, an authentication bypass vulnerability in Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, and Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage.

    2026-05-26 02:50 UTC
  • Security Advisory Bulletin 064 | Ubiquiti Community
    web:community.ui.com

    Published: May 21, 2026 Updated: May 22, 2026 Version: 1.1 Revision: 1.1 Summary 1 of 5 A malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerability found in UniFi OS devices to execute a Command Injection. Affected Products: UniFi OS Server (Version 5.0.6 and earlier) Mitigation : Update your UniFi OS Server to Version 5.0.8 or later ...

    2026-05-26 02:50 UTC
  • Security Update Guide - Microsoft
    web:msrc.microsoft.com

    The Microsoft Security Response Center (MSRC) investigates all reports of security vulnerabilities affecting Microsoft products and services, and provides the information here as part of the ongoing effort to help you manage security risks and help keep your systems protected.

    2026-05-26 02:50 UTC
  • CISA Adds One Known Exploited Vulnerability to Catalog
    web:www.cisa.gov

    Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of KEV Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria.

    2026-05-26 02:50 UTC
  • May 2026 Patch Tuesday: Updates and Analysis | CrowdStrike
    web:www.crowdstrike.com

    Microsoft has released security updates for 130 vulnerabilities, including 30 critical, in its May 2026 Patch Tuesday rollout.

    2026-05-26 02:50 UTC
  • CVE 2026 — The Vulnerabilities That Matter Most Right Now
    web:www.penligent.ai

    Second, chipset and OEM dependencies make remediation slower and messier than software-only patching. Google's bulletin explains the two Android patch levels for March 2026 and clarifies that devices with security patch levels of 2026 -03-01 or 2026 -03-05 are protected against the associated issues, depending on applicable components.

    2026-05-26 02:50 UTC
  • CVE-2026-20182: Cisco SD-WAN Active Exploitation | Tenable®
    web:www.tenable.com

    CVE - 2026 -20182 is a critical auth bypass in Cisco SD-WAN under active exploitation. CISA issued Emergency Directive 26-03 with a 3-day deadline.

    2026-05-26 02:50 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-8226.json.

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                  },
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                "role": "CISA Coordinator",
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