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CVE-2004-0978
Heap-based buffer overflow in the Hrtbeat.ocx (Heartbeat) ActiveX control for Internet Explorer 5.01 through 6, when users who visit…
- 10.0HighCVSS base score
- 38.3%Exploitation in 30 daysEPSS · top 1.4% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Heap-based buffer overflow in the Hrtbeat.ocx (Heartbeat) ActiveX control for Internet Explorer 5.01 through 6, when users who visit online gaming sites that are associated with MSN, allows remote attackers to execute arbitrary code via the SetupData parameter.
Timeline
ID reserved
By mitre
- 1 day later
· 1 day later
Published
- 20 years later
· 20 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 38.3% · top 1.4% of all CVEs (11 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 10.0.
Affected products
n/a
- affected n/a
References
References6
- 20050119 MSN Heartbeat Control Buffer Overflow (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- VU#673134 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
- MS04-038 (opens in a new tab)vendor-advisoryx_refsource_MSx_transferred
- heartbeat-activex(17714) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 11367 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- http://www.ngssoftware.com/advisories/heartbeatfull.txt (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2004-0976 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2004-0978)Record last updated .