CVE-1999-0702Internet Explorer Code Injection
Internet Explorer 5.0 and 5.01 allows remote attackers to modify or execute files via the Import/Export Favorites feature, aka the "ImportExportFavorites" vulnerability.
Published Sep 10, 1999 · Updated Apr 15, 2026
Key Facts
Patch immediately- CVE-1999-0702 is a critical-severity vulnerability (CVSS 10.0 v2) affecting Internet Explorer (Microsoft).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 24% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Scores
CVSS v2
10.0
AV:N/AC:L/Au:N/C:C/I:C/A:C
EPSS (30-day exploit likelihood)
24%
Higher than 97.8% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
35/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
1
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Description
Internet Explorer 5.0 and 5.01 allows remote attackers to modify or execute files via the Import/Export Favorites feature, aka the "ImportExportFavorites" vulnerability.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Internet ExplorerMicrosoft | 4.0.1, 5.0 | n/a |
Timeline
Publicly disclosed
Sep 10, 1999
Last updated
Apr 15, 2026
Weakness Type
- CWE-94 Improper Control of Generation of Code ('Code Injection')
References
- exploitExploitDB-19490
- otherMS99-037
- otherQ241361
- other627
FAQ
Common Questions.
Internet Explorer 5.0 and 5.01 allows remote attackers to modify or execute files via the Import/Export Favorites feature, aka the "ImportExportFavorites" vulnerability.
Affected: Internet Explorer (Microsoft) versions 4.0.1, 5.0. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Is CVE-1999-0702 On Your Attack Surface?
Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.
Request A Demo