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CVE-2010-4699
The iconv_mime_decode_headers function in the Iconv extension in PHP before 5.3.4 does not properly handle encodings that are unrecognized…
Medium5.0EPSS 1.6%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
The iconv_mime_decode_headers function in the Iconv extension in PHP before 5.3.4 does not properly handle encodings that are unrecognized by the iconv and mbstring (aka Multibyte String) implementations, which allows remote attackers to trigger an incomplete output array, and possibly bypass spam detection or have unspecified other impact, via a crafted Subject header in an e-mail message, as demonstrated by the ks_c_5601-1987 character set.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
- EPSS (exploitation in 30 days)
- 1.6% · top 24% of all CVEs (4 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Weakness
Affected products
n/a
- affected n/a
References (5)
- [php-general] 20070410 Decoding from unknown charsets (inc. ks_c_5601-1987) (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- oval:org.mitre.oval:def:12393 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- http://www.php.net/ChangeLog-5.php (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://bugs.php.net/52941 (opens in a new tab)x_refsource_CONFIRMx_transferred
- php-iconvmimedecodeheaders-sec-bypass(64963) (opens in a new tab)vdb-entryx_refsource_XFx_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)
- 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://trackcve.app/cve/CVE-2010-4699)Record last updated .