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CVE-2026-44099· NVD / CVE Program· CNA CERTVDE

Local Privilege Escalation via pppd password injection

A privilege escalation vulnerability in the system configuration allows a low-privileged local user to execute arbitrary commands as root, resulting in full system compromise.

HighCVSS 8.5 · v4.0—No exploit Fix available
Published
Jul 30, 2026
Updated
Jul 30, 2026
EPSS
0.2% · 8th percentile
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Report tools

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Action score

34

Monitor

Low priority for now.

CVSS
34 / 40 · 8.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · CERTVDE
8.5
NVD has not scored this yet; the score shown is the CNA’s.

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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Affected systems

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (CERTVDE). Independent of NVD's CPE analysis and usually ahead of it.

  • Phoenix Contact CHARX SEC-3000

    • 1.0.0 and later · before 1.9.1affected · semver

  • Phoenix Contact CHARX SEC-3050

    • 1.0.0 and later · before 1.9.1affected · semver

  • Phoenix Contact CHARX SEC-3100

    • 1.0.0 and later · before 1.9.1affected · semver

  • Phoenix Contact CHARX SEC-3150

    • 1.0.0 and later · before 1.9.1affected · semver

Same product

phoenix contact: all records

Other highest-scoring records for the same primary product.

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Phoenix Contact CHARX SEC-30001.9.1Vendor (CNA)
Phoenix Contact CHARX SEC-30501.9.1Vendor (CNA)
Phoenix Contact CHARX SEC-31001.9.1Vendor (CNA)
Phoenix Contact CHARX SEC-31501.9.1Vendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-440980 days apartOS Command Injection in OCPP Agent via charge_box_id
    35Monitor
  • CVE-2026-441060 days apartLocal Privilege Escalation vulnerability in /etc/init.d/user-applications via customer website file
    34Monitor
  • CVE-2026-440930 days apartLocal Privilege Escalation vulnerability in /etc/init.d/user-applications via user-application start script
    34Monitor
  • CVE-2026-440950 days apartLocal Privilege Escalation via Network scripts
    34Monitor
  • CVE-2026-440960 days apartudhcpc Privilege Escalation
    34Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

  • CVE-2026-441010 days apartOCPP reconfiguration vulnerability
    37Monitor
  • CVE-2026-441000 days apartJupiCore charging point reconfiguration without auth
    35Monitor
  • CVE-2026-441070 days apartExposed Reboot via Modbus
    34Monitor

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
X

Weakness class (CWE)

CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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-secondary

Root cause

User input is inserted as text into a shell command. The shell may interpret special characters in the input as part of the command.

The bug in code

The whole CWE-78 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
const host = req.body.host;exec("ping -c 1 " + host, onResult);

Fixed

ts
const host = req.body.host;if (!/^[a-z0-9.-]{1,253}$/i.test(host)) return res.sendStatus(400);execFile("ping", ["-c", "1", host], onResult);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records