CVE-2012-1438

The Microsoft Office file parser in Comodo Antivirus 7425 and Sophos Anti-Virus 4.61.0 allows remote attackers to bypass malware detection via an Office file with a ustar character sequence at a certain location. NOTE: this may later be SPLIT into multiple CVEs if additional information is published showing that the error occurred independently in different Office parser implementations.

Published: 2012-03-21 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-1438 is rated Moderate Risk (55.8/100): CVSS Medium severity, with high exploitation likelihood (EPSS 14.12%, 96th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +12.55% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2012-1438

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.56% 14.12% +12.55%
2 2025-06-03 2.11% 1.56% -0.55%
3 2025-03-30 — 2.11% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-1438

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2012-1438

Affected software / configurations for CVE-2012-1438

Vendor Product Version Raw CPE
comodo comodo_antivirus 7425 cpe:2.3:a:comodo:comodo_antivirus:7425:*:*:*:*:*:*:*
sophos sophos_anti-virus 4.61.0 cpe:2.3:a:sophos:sophos_anti-virus:4.61.0:*:*:*:*:*:*:*

References for CVE-2012-1438

cvelogic Threat Intelligence