CVE-2023-28343: OS command injection affects Altenergy Power Control Software C1.2.5 via shell metacharacters in the index.php

This week

CRITICAL 9.8REMOTEMITIGATE

CVE-2023-28343 is a critical-severity flaw (CVSS 9.8) affecting energy communication unit firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

OS command injection affects Altenergy Power Control Software C1.2.5 via shell metacharacters in the index.php/management/set_timezone timezone parameter, because of set_timezone in models/management_model.php.

Why this priority

Critical severity
EPSS top 1%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	84.8% (top 1%)
CISA exploited list	No
Weakness	CWE-78
Published	2023-03-14
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: apsystems

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-03-14 20:15 UTCPublished CVE record published
2026-06-17 05:47 UTCUpdated Record last modified

apsystems energy communication unit firmware MITIGATE

Affected: c1.2.5

Fixed in: no fixed release known

Safe to downgrade to: a release before c1.2.5

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora ELN · python-wrapt · FIXED · 2.5.2-1.eln159 · FEDORA-2026-5503ee9370 · source

sudo dnf upgrade --advisory=FEDORA-2026-5503ee9370

Fedora 46 · python-wrapt · FIXED · 2.5.2-1.fc46 · FEDORA-2026-8a83579801 · source

sudo dnf upgrade --advisory=FEDORA-2026-8a83579801

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: superzerosec/CVE-2023-28343 (8 stars)
GitHub PoC: gobysec/CVE-2023-28343 (6 stars)
Write-up: github.com/ahmedalroky/Disclosures/blob/main/apesystems/os_command_injection.md
GitHub PoC: hba343434/CVE-2023-28343
Exploit-DB: Altenergy Power Control Software C1.2.5 - OS command injection
Nuclei scan template: Altenergy Power Control Software C1.2.5 - Remote Command Injection

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-28343?

energy communication unit firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-28343 being exploited?

CVE-2023-28343 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-28343 affect?

CVE-2023-28343 affects energy communication unit firmware. Severity is critical (CVSS 9.8). OS command injection affects Altenergy Power Control Software C1.2.5 via shell metacharacters in the index.php/management/set_timezone timezone parameter, because of set_timezone in models/management_model.php.

How urgent is CVE-2023-28343?

Priority 69/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

References

← Back to latest CVEs