CVE-2012-3456

Exp

Heap-based buffer overflow in the read function in filters/words/msword-odf/wv2/src/styles.cpp in the Microsoft import filter in Calligra 2.4.3 and earlier allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a crafted ODF style in an ODF document. NOTE: this is the same vulnerability as CVE-2012-3455, but it was SPLIT by the CNA even though Calligra and KOffice share the same codebase.

Published: 2012-08-20 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-3456 is rated High Exploit Risk (74.8/100): CVSS High severity, with high exploitation likelihood (EPSS 42.17%, 97th percentile). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2012-3456

EDB-ID Source Kind Published Link
37576 exploit_db edb 2012-08-07 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2012-3456

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 2026-04-21 46.51% 42.17% -4.33%
2 2025-03-30 61.22% 46.51% -14.71%
3 2025-03-29 — 61.22% —

Full EPSS history (17 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-3456

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2012-3456

OS Trackers for CVE-2012-3456

vendor priority summary link
debian not yet assigned CVE-2012-3456 not yet assigned priority: Debian including 1 source packages (calligra), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2012-3456
gentoo normal CVE-2012-3456: 1 GLSA(s) (201209-10), 1 atom(s) (app-office/calligra); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2012-3456
ubuntu medium CVE-2012-3456 medium priority: Ubuntu including 1 source packages (calligra), 6 status rows across 6 suites (hardy, lucid, natty, oneiric, precise, upstream): DNE 4, needs-triage 1, released 1. https://ubuntu.com/security/CVE-2012-3456

Affected software / configurations for CVE-2012-3456

Vendor Product Version Raw CPE
calligra calligra <= 2.4.3 cpe:2.3:a:calligra:calligra:*:*:*:*:*:*:*:*
calligra calligra 2.4 cpe:2.3:a:calligra:calligra:2.4:*:*:*:*:*:*:*
calligra calligra 2.4 cpe:2.3:a:calligra:calligra:2.4:beta2:*:*:*:*:*:*
calligra calligra 2.4 cpe:2.3:a:calligra:calligra:2.4:beta3:*:*:*:*:*:*
calligra calligra 2.4 cpe:2.3:a:calligra:calligra:2.4:beta4:*:*:*:*:*:*
calligra calligra 2.4 cpe:2.3:a:calligra:calligra:2.4:beta6:*:*:*:*:*:*
calligra calligra 2.4 cpe:2.3:a:calligra:calligra:2.4:beta7:*:*:*:*:*:*
calligra calligra 2.4 cpe:2.3:a:calligra:calligra:2.4:rc2:*:*:*:*:*:*
calligra calligra 2.4.1 cpe:2.3:a:calligra:calligra:2.4.1:*:*:*:*:*:*:*
calligra calligra 2.4.2 cpe:2.3:a:calligra:calligra:2.4.2:*:*:*:*:*:*:*

References for CVE-2012-3456

cvelogic Threat Intelligence