How severe is CVE-2023-1109?

CVE-2023-1109 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-1109 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-1109?

CVE-2023-1109 primarily affects Phoenixcontact Energy Axc Pu. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-1109?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-1109 published?

CVE-2023-1109 was published on 2023-04-17 and last updated on 2026-06-17.

CVE-2023-1109

CVE-2023-1109 is a high-severity vulnerability in Phoenixcontact Energy Axc Pu with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Phoenixcontact Energy Axc Pu
Published: 2023-04-17
Last modified: 2026-06-17

Description

In Phoenix Contacts ENERGY AXC PU Web service an authenticated restricted user of the web frontend can access, read, write and create files throughout the file system using specially crafted URLs via the upload and download functionality of the web service. This may lead to full control of the service.

Frequently asked questions

What is CVE-2023-1109?: In Phoenix Contacts ENERGY AXC PU Web service an authenticated restricted user of the web frontend can access, read, write and create files throughout the file system using specially crafted URLs via the upload and download functionality of the web service. This may lead to full control of the service.
How severe is CVE-2023-1109?: CVE-2023-1109 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-1109 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-1109?: CVE-2023-1109 primarily affects Phoenixcontact Energy Axc Pu. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-1109?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-1109 published?: CVE-2023-1109 was published on 2023-04-17 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:phoenixcontact:energy_axc_pu:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:infobox_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:smartrtu_axc_sg_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:smartrtu_axc_ig_firmware:*:*:*:*:*:*:*:*

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