CVE-2026-44950Network attack vector

Privilege escalation via cumulative glyph buffer overflow

Published Sep 10, 2026 · Updated Sep 10, 2026

Heap buffer overflow in X.Org libXfont2 through 2.0.8 allows remote attackers controlling a font server to overwrite X server memory. fs_read_glyphs() validates each source bitmap slice but advances one destination cursor without checking cumulative glyph lengths against the allocated nbytes buffer. When an X server consumes crafted overlapping glyph offsets, the overwrite crashes an unprivileged server or enables privilege escalation if the server is privileged.

CVSS severity9.5

Critical

EPSS probability0.44%

Next 30 days · Sep 16, 2026

Known exploitationUnconfirmed

Based on sourced intelligence

Hinoki checkNot available

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Summary

What happened

The record

CVE: CVE-2026-44950
Published: Sep 10, 2026
Updated: Sep 10, 2026

Vendor: NeuVector
Product: SLES 12 SP5 EC2 SAP BYOS Image
Classifications: CWE-120, T1203

Attack vector: network
Privileges: unauthenticated

Timeline

How it unfolded

Sep 10, 2026CVE publishedPublication date reported by the CVE source.
Sep 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

Affected versionversion=? <2.0.3-3.6.1

What conditions does exploitation require?

Attack vectornetwork

Required privilegesunauthenticated

What is affected?

NeuVector · SLES 12 SP5 EC2 SAP BYOS Imageversion=? <2.0.3-3.6.1

NeuVector · SLES SAP GCE 3P Imageversion=? <2.0.7-160000.5.1

NeuVector · SUSE Kiosk TigerVNC X11VNC Container Imageversion=? <2.0.3-150000.3.6.1

NeuVector · SUSE Linux Enterprise High Performance Computingversion=? <2.0.3-150000.3.6.1

NeuVector · Image SLES15-SP7-SAP-BYOS-GCEversion=? <2.0.3-150000.3.6.1

NeuVector · SUSE Liberty Linux 8version=? <2.0.3-2.el8_10.3

NeuVector · SUSE Linux Enterprise Server LTSS Extended Securityversion=? <2.0.3-3.6.1

NeuVector · Image SLES15-SP7-SAP-EC2version=? <2.0.3-150000.3.6.1

NeuVector · SLES SAP BYOS EC2 Imageversion=? <2.0.7-160000.5.1

NeuVector · SLES SAP BYOS GCE Imageversion=? <2.0.7-160000.5.1

X.Org Foundation · libXfontversion=? <=2.0.8

NeuVector · SLES SAP Azure Imageversion=? <2.0.7-160000.5.1

NeuVector · Image SLES15-SP7-SAP-Hardened-BYOS-EC2version=? <2.0.3-150000.3.6.1

NeuVector · SLES SAP Azure 3P Imageversion=? <2.0.7-160000.5.1

NeuVector · SLES 15 SP6 SAP Imageversion=? <2.0.3-150000.3.6.1

NeuVector · SLES SAP GCE Imageversion=? <2.0.7-160000.5.1

NeuVector · SUSE Linux Enterprise Module for Basesystemversion=? <2.0.3-150000.3.6.1

NeuVector · SUSE Liberty Linux 10version=? <2.0.6-5.el10_2.3

NeuVector · Image SLES15-SP7-SAPCAL-EC2version=? <2.0.3-150000.3.6.1

NeuVector · openSUSE Leap 16.0version=? <2.0.7-160000.5.1

NeuVector · SLES 12 SP5 Azure SAP BYOS Imageversion=? <2.0.3-3.6.1

NeuVector · Image SLES15-SP7-SAP-GCE-3Pversion=? <2.0.3-150000.3.6.1

NeuVector · SLES SAP BYOS Azure Imageversion=? <2.0.7-160000.5.1

NeuVector · SLES 15 SP6 SAP BYOS Imageversion=? <2.0.3-150000.3.6.1

NeuVector · Image SLES15-SP7-SAP-Hardened-Azureversion=? <2.0.3-150000.3.6.1

NeuVector · SLES 12 SP5 GCE SAP BYOS Imageversion=? <2.0.3-3.6.1

NeuVector · SUSE Kiosk Xorg Container Imageversion=? <2.0.3-150000.3.6.1

NeuVector · SUSE Liberty Linux 9version=? <2.0.3-12.el9_8.3

NeuVector · Image SLES15-SP7-SAPCAL-Azureversion=? <2.0.3-150000.3.6.1

NeuVector · SLES 12 SP5 Azure SAP On-Demand Imageversion=? <2.0.3-3.6.1

NeuVector · SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOSversion=? <2.0.3-150000.3.6.1

NeuVector · Image SLES15-SP7-SAP-GCEversion=? <2.0.3-150000.3.6.1

NeuVector · SLES 12 SP5 GCE SAP On-Demand Imageversion=? <2.0.3-3.6.1

NeuVector · SUSE Linux Enterprise Server for SAP Applicationsversion=? <2.0.3-150000.3.6.1; version=? <2.0.7-160000.5.1

NeuVector · Image SLES15-SP7-SAP-Hardened-BYOS-GCEversion=? <2.0.3-150000.3.6.1

NeuVector · Image SLES15-SP7-SAPCAL-GCEversion=? <2.0.3-150000.3.6.1

NeuVector · Image SLES15-SP7-SAP-BYOS-EC2version=? <2.0.3-150000.3.6.1

NeuVector · SUSE Manager Proxyversion=? <2.0.3-150000.3.6.1

NeuVector · SLES SAPCAL GCE Imageversion=? <2.0.7-160000.5.1

NeuVector · SLES 12 SP5 EC2 SAP On-Demand Imageversion=? <2.0.3-3.6.1

NeuVector · Image SLES15-SP7-SAP-Hardened-GCEversion=? <2.0.3-150000.3.6.1

NeuVector · SUSE Manager Serverversion=? <2.0.3-150000.3.6.1

NeuVector · SUSE Manager Retail Branch Serverversion=? <2.0.3-150000.3.6.1

NeuVector · openSUSE Tumbleweedversion=? <2.0.7-3.1

NeuVector · SUSE Linux Enterprise Desktop 15 SP7version=? <2.0.3-150000.3.6.1

NeuVector · Image SLES15-SP7-SAP-Hardened-BYOS-Azureversion=? <2.0.3-150000.3.6.1

NeuVector · SUSE Linux Enterprise Serverversion=? <2.0.3-150000.3.6.1; version=? <2.0.3-3.6.1; version=? <2.0.7-160000.5.1

NeuVector · SLES 15 SP6 SAP Azure 3P Imageversion=? <2.0.3-150000.3.6.1

NeuVector · SLES 15 SP6 SAP Azure Imageversion=? <2.0.3-150000.3.6.1

Published CVSS scores

7.5Red HatCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

9.5SUSECVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

9.0SUSECVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026

Latest reporting daySep 15, 2026

Latest daily unique IPsUnavailable

Prior 30-day averageUnavailable

SourceShadowserver honeypots (KEV)

Vectornetwork

Privilegesunauthenticated

Known exploitationUnconfirmed

Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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