CVE-2012-1858

Exp

The toStaticHTML API (aka the SafeHTML component) in Microsoft Internet Explorer 8 and 9, Communicator 2007 R2, and Lync 2010 and 2010 Attendee does not properly handle event attributes and script, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via a crafted HTML document, aka "HTML Sanitization Vulnerability."

Published: 2012-06-12 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-1858 is rated High Exploit Risk (61.3/100): CVSS Medium severity, with high exploitation likelihood (EPSS 22.02%, 97th percentile). 1 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-2012-1858

EDB-ID Source Kind Published Link
19777 exploit_db edb 2012-07-12 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2012-1858

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 38.27% 22.02% -16.25%
2 2026-05-04 41.35% 38.27% -3.08%
3 2026-03-05 — 41.35% —

Full EPSS history (27 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-1858

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:P/I:N/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:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2012-1858

Affected software / configurations for CVE-2012-1858

Vendor Product Version Raw CPE
microsoft lync 2010 cpe:2.3:a:microsoft:lync:2010:*:attendee:*:*:*:*:*
microsoft lync 2010 cpe:2.3:a:microsoft:lync:2010:*:x64:*:*:*:*:*
microsoft lync 2010 cpe:2.3:a:microsoft:lync:2010:*:x86:*:*:*:*:*
microsoft office_communicator 2007 cpe:2.3:a:microsoft:office_communicator:2007:r2:*:*:*:*:*:*
microsoft internet_explorer 8 cpe:2.3:a:microsoft:internet_explorer:8:*:*:*:*:*:*:*
microsoft internet_explorer 9 cpe:2.3:a:microsoft:internet_explorer:9:*:*:*:*:*:*:*

References for CVE-2012-1858

cvelogic Threat Intelligence