CVE-1999-0827

lowpriority · track · 12OT risk · elevatedEPSS 0.048 · 92 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

4.78% (92nd) EPSS

CVSS 2.6 · low

Is it mine?

12 products

Who says so?

2 sources

enisa_euvd · nvd

EPSS · scored 2026-10-27

By default, Internet Explorer 5.0 and other versions enables the "Navigate sub-frames across different domains" option, which allows frame spoofing.

cvss

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

2.6

010

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

v2.02.6lowAV:N/AC:H/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 4.9 · impact 2.9

v2.02.2lowAV:N/AC:H/Au:N/C:P/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

The CWE weakness classes this flaw belongs to.

CWE-116USLLM-inferredCWE-862USLLM-inferred

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
microsoft ie= 4.0nvdUScpe:2.3:a:microsoft:ie:*:*:*:*:*:*:*:*
microsoft internet explorer= 3.0nvdUScpe:2.3:a:microsoft:internet_explorer:*:*:*:*:*:*:*:*
microsoft internet explorer= 3.0.2nvdUScpe:2.3:a:microsoft:internet_explorer:*:*:*:*:*:*:*:*
microsoft internet explorer= 3.1nvdUScpe:2.3:a:microsoft:internet_explorer:*:*:*:*:*:*:*:*
microsoft internet explorer= 3.2nvdUScpe:2.3:a:microsoft:internet_explorer:*:*:*:*:*:*:*:*
microsoft internet explorer= 4.0nvdUScpe:2.3:a:microsoft:internet_explorer:*:*:*:*:*:*:*:*
microsoft internet explorer= 4.0.1nvdUScpe:2.3:a:microsoft:internet_explorer:*:*:*:*:*:*:*:*
microsoft internet explorer= 4.1nvdUScpe:2.3:a:microsoft:internet_explorer:*:*:*:*:*:*:*:*
microsoft internet explorer= 4.5nvdUScpe:2.3:a:microsoft:internet_explorer:*:*:*:*:*:*:*:*
microsoft internet explorer= 5.0nvdUScpe:2.3:a:microsoft:internet_explorer:*:*:*:*:*:*:*:*
netscape navigator≤ 4.5nvdUScpe:2.3:a:netscape:navigator:*:*:*:*:*:*:*:*

Other names and identifiers for this entity.

Which sources assert this record, and when.

published 1999-11-01modified 2026-06-16

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.