CVE-2006-3227
Interpretation conflict between Internet Explorer and other web browsers such as Mozilla, Opera, and Firefox might allow remote attackers…
- 2.6LowCVSS base score
- 13.5%Exploitation in 30 daysEPSS · top 3.5% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Interpretation conflict between Internet Explorer and other web browsers such as Mozilla, Opera, and Firefox might allow remote attackers to modify the visual presentation of web pages and possibly bypass protection mechanisms such as content filters via ASCII characters with the 8th bit set, which could be stripped by Internet Explorer to render legible text, but not when using other browsers. NOTE: there has been significant discussion about this issue, and as of 20060625, it is not clear where the responsibility for this issue lies, although it might be due to vagueness within the associated standards. NOTE: this might only be exploitable with certain encodings.
Timeline
ID reserved
By mitre
Published
- 18 years later
· 18 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 | Low2.6 | AV:N/AC:H/Au:N/C:N/I:P/A:N |
- EPSS (exploitation in 30 days)
- 13.5% · top 3.5% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 2.6.
Affected products
n/a
- affected n/a
References
References12
- 20060621 Re: Bypassing of web filters by using ASCII (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- ie-ascii-encoded-web-filter-bypass(27288) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 20060623 Re: Bypassing of web filters by using ASCII (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 20060626 Re: Bypassing of web filters by using ASCII (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 20060622 Re: Bypassing of web filters by using ASCII (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 20060621 Bypassing of web filters by using ASCII (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- http://ha.ckers.org/blog/20060621/us-ascii-xss-part-2 (opens in a new tab)x_refsource_MISCx_transferred
- 20060621 Re: Bypassing of web filters by using ASCII (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- http://ha.ckers.org/blog/20060621/malformed-ascii-bypasses-filters/ (opens in a new tab)x_refsource_MISCx_transferred
- 20060623 RE: Bypassing of web filters by using ASCII (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 20060626 RE: Bypassing of web filters by using ASCII (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 28376 (opens in a new tab)vdb-entryx_refsource_OSVDBx_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-2006-3224 (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-2006-3227)Record last updated .