How severe is CVE-2012-10043?

CVE-2012-10043 has a CVSS 4.0 base score of 9.3, rated critical severity.

Is CVE-2012-10043 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2012-10043?

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

Does CVE-2012-10043 have an EU (EUVD) identifier?

Yes. CVE-2012-10043 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2012-6591.

When was CVE-2012-10043 published?

CVE-2012-10043 was published on 2025-08-08 and last updated on 2026-06-16.

CVE-2012-10043

CVE-2012-10043 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.3. 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-121.

Key facts

Severity: Critical (CVSS 4.0 base score 9.3)
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2012-6591
Weakness: CWE-121
Published: 2025-08-08
Last modified: 2026-06-16

Description

A stack-based buffer overflow vulnerability exists in ActFax Server version 4.32, specifically in the "Import Users from File" functionality of the client interface. The application fails to properly validate the length of tab-delimited fields in .exp files, leading to unsafe usage of strcpy() during CSV parsing. An attacker can exploit this vulnerability by crafting a malicious .exp file and importing it using the default character set "ECMA-94 / Latin 1 (ISO 8859)". Successful exploitation may result in arbitrary code execution, leading to full system compromise. User interaction is required to trigger the vulnerability.

Frequently asked questions

What is CVE-2012-10043?: A stack-based buffer overflow vulnerability exists in ActFax Server version 4.32, specifically in the "Import Users from File" functionality of the client interface. The application fails to properly validate the length of tab-delimited fields in .exp files, leading to unsafe usage of strcpy() during CSV parsing. An attacker can exploit this vulnerability by crafting a malicious .exp file and importing it using the default character set "ECMA-94 / Latin 1 (ISO 8859)". Successful exploitation may result in arbitrary code execution, leading to full system compromise. User interaction is required to trigger the vulnerability.
How severe is CVE-2012-10043?: CVE-2012-10043 has a CVSS 4.0 base score of 9.3, rated critical severity.
Is CVE-2012-10043 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2012-10043?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2012-10043 have an EU (EUVD) identifier?: Yes. CVE-2012-10043 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2012-6591.
When was CVE-2012-10043 published?: CVE-2012-10043 was published on 2025-08-08 and last updated on 2026-06-16.

References

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