CVE-2010-1885

highpriority · attend · 72EPSS 0.711 · 99 %ileexploit · weaponizedEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

3 exploits · weaponized

Likely / severe?

71.1% (99th) EPSS

CVSS 9.3 · high

Is it mine?

4 products

Check your exposure

Who says so?

2 sources

enisa_euvd · nvd

EPSS · scored 2026-10-27

The MPC::HexToNum function in helpctr.exe in Microsoft Windows Help and Support Center in Windows XP and Windows Server 2003 does not properly handle malformed escape sequences, which allows remote attackers to bypass the trusted documents whitelist (fromHCP option) and execute arbitrary commands via a crafted hcp:// URL, aka "Help Center URL Validation Vulnerability."

cvss

Technical severity, 0–10. One row per scoring source.

9.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.09.3highAV:N/AC:M/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 8.6 · impact 10

v2.09.3highAV:N/AC:M/Au:N/C:C/I:C/A:C/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-78USprimary

exploits (3)

Public proof-of-concept and weaponised exploit code.

exploit/windows/browser/ms10_042_helpctr_xss_cmd_execMicrosoft Help Center XSS and Command Executionweaponized · metasploit
EDB-13808Microsoft Windows Help Centre Handles - Malformed Escape Sequences Incorrectly (MS03-044)functional · exploit_db
EDB-16545Microsoft Help Center - Cross-Site Scripting / Command Execution (MS10-042) (Metasploit)functional · exploit_db

affected products (4)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
microsoft windows 2003 serverall versionsnvdUScpe:2.3:o:microsoft:windows_2003_server:*:*:*:*:*:*:*:*
microsoft windows server 2003all versionsnvdUScpe:2.3:o:microsoft:windows_server_2003:*:*:*:*:*:*:*:*
microsoft windows xpall versionsnvdUScpe:2.3:o:microsoft:windows_xp:*:*:*:*:*:*:*:*

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

enisa_euvd nvd NVD CVE.org MITRE

published 2010-06-15modified 2026-06-16

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references (32)

External citations — patches, advisories, analysis.

scry

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