Heap-based buffer overflow in the MaskedEdit ActiveX control in Msmask32.ocx 6.0.81.69, and possibly other versions before 6.0.84.18, in Microsoft Visual Studio 6.0, Visual Basic 6.0, Visual Studio .NET 2002 SP1 and 2003 SP1, and Visual FoxPro 8.0 SP1 and 9.0 SP1 and SP2 allows remote attackers to execute arbitrary code via a long Mask parameter, related to not "validating property values with boundary checks," as exploited in the wild in August 2008, aka "Masked Edit Control Memory Corruption Vulnerability."
CVE-2008-3704
Score elevated to 9.0 because EPSS predicts 87% probability of exploitation within the next 30 days (top 0.5% of all CVEs). Confidence: see factors.
- High exploitation likelihood — EPSS 56%
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- —
- EG Score
- 9.0(low)
- EPSS
- 98.9%
- KEV
- Not listed
Published
August 18, 2008
Last Modified
April 23, 2026
References (24)
- cve@mitrehttp://secunia.com/advisories/31498
- cve@mitrehttp://support.avaya.com/elmodocs2/security/ASA-2008-473.htm
- cve@mitrehttp://www.securityfocus.com/bid/30674
- cve@mitrehttp://www.securitytracker.com/id?1020710
- cve@mitrehttp://www.us-cert.gov/cas/techalerts/TA08-344A.html
- cve@mitrehttp://www.vupen.com/english/advisories/2008/2380
- cve@mitrehttp://www.vupen.com/english/advisories/2008/3382
- cve@mitrehttps://docs.microsoft.com/en-us/security-updates/securitybulletins/2008/ms08-070
- cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/44444
- cve@mitrehttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5794
- cve@mitrehttps://www.exploit-db.com/exploits/6244
- cve@mitrehttps://www.exploit-db.com/exploits/6317
- af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/31498
- af854a3a-2127-422b-91ae-364da2661108http://support.avaya.com/elmodocs2/security/ASA-2008-473.htm
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/30674
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 6× in last 7d / 34× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-11 08:22 UTCEPSS rescore
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- 2026-06-18 17:49 UTCEPSS rescore
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- 2026-06-01 13:49 UTCEPSS rescore
- 2026-06-01 13:49 UTCEPSS rescore
- 2026-06-01 13:49 UTCEPSS rescore
- 2026-05-30 20:37 UTCEG score recompute
- 2026-05-30 20:37 UTCGHSA enrichment
- 2026-05-28 13:42 UTCEPSS rescore
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- 2026-05-27 13:38 UTCEPSS rescore
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- 2026-05-20 11:20 UTCEPSS rescore
- 2026-05-20 11:20 UTCEPSS rescore
- 2026-05-18 21:29 UTCEPSS rescore
Publicly available exploits
(4 references)Working exploit code is in the public domain (1 Metasploit module) (3 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
- Exploit-DBEDB-16507✓ verifiedFirst seen Nov 24, 2010
Microsoft Visual Studio - Msmask32.ocx ActiveX Buffer Overflow (MS08-070) (Metasploit)
Open source ↗ - Exploit-DBEDB-6317✓ verifiedFirst seen Aug 26, 2008
Microsoft Visual Studio - 'Msmask32.ocx' ActiveX Remote Buffer Overflow
Open source ↗ - Exploit-DBEDB-6244✓ verifiedFirst seen Aug 14, 2008
Microsoft Visual Studio - 'Msmask32.ocx' ActiveX Remote Buffer Overflow (PoC)
Open source ↗ - Metasploitexploit/windows/browser/ms08_070_visual_studio_msmask✓ verifiedFirst seen Aug 13, 2008
Microsoft Visual Studio Mdmask32.ocx ActiveX Stack Buffer Overflow
Open source ↗
Related CVEs(same CWE)
Same CWE
10 shownCWE-119
Frequently asked(4)
What is CVE-2008-3704?
When was CVE-2008-3704 disclosed?
Is CVE-2008-3704 actively exploited?
How do I remediate CVE-2008-3704?
Dependency Blast Radius
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