CVE-2023-0757: Incorrect Permission Assignment for Critical Resource vulnerability in PHOENIX CONTACT MULTIPROG, PHOENIX CONT

This month

CRITICAL 9.8REMOTEMITIGATEMITIGATE

CVE-2023-0757 is a critical-severity flaw (CVSS 9.8) affecting multiprog, proconos eclr. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Incorrect Permission Assignment for Critical Resource vulnerability in PHOENIX CONTACT MULTIPROG, PHOENIX CONTACT ProConOS eCLR (SDK) allows an unauthenticated remote attacker to upload arbitrary malicious code and gain full access on the affected device.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-732
Published	2023-12-14
Last modified	2026-06-17

Publisher (CNA): CERT VDE · Vendor: phoenixcontact

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

Am I affected?

Timeline

2023-12-14 14:15 UTCPublished CVE record published
2026-06-17 05:26 UTCUpdated Record last modified

phoenixcontact multiprog MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy multiprog || rpm -q multiprog || multiprog --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

phoenixcontact proconos eclr MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy proconos-eclr || rpm -q proconos-eclr || proconos-eclr --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

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-2023-0757?

multiprog: mitigate or apply the listed mitigation; proconos eclr: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-0757 being exploited?

CVE-2023-0757 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-2023-0757 affect?

CVE-2023-0757 affects multiprog, proconos eclr. Severity is critical (CVSS 9.8). Incorrect Permission Assignment for Critical Resource vulnerability in PHOENIX CONTACT MULTIPROG, PHOENIX CONTACT ProConOS eCLR (SDK) allows an unauthenticated remote attacker to upload arbitrary malicious code and gain full access on the a

How urgent is CVE-2023-0757?

Priority 54/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-5592 HIGH 7.5 MITIGATE MITIGATE Download of Code Without Integrity Check vulnerability in PHOENIX CONTACT MULTIPROG, PHOENIX CONTACT ProConOS
CVE-2022-31801 CRITICAL 9.8 MITIGATE MITIGATE An unauthenticated, remote attacker could upload malicious logic to the devices based on ProConOS/ProConOS eCL

References

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