CVE-2007-4840 json
PHP 5.2.4 and earlier allows context-dependent attackers to cause a denial of service (application crash) via (1) a long string in the out_…
published 2007-09-12 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-4821
- cvss
- 5.0
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.2%
- EPSS 3.2% chance of exploitation in 30 days, percentile 88%
- public exploits
- 0
- none known
Summary
PHP 5.2.4 and earlier allows context-dependent attackers to cause a denial of service (application crash) via (1) a long string in the out_charset parameter to the iconv function; or a long string in the charset parameter to the (2) iconv_mime_decode_headers, (3) iconv_mime_decode, or (4) iconv_strlen function. NOTE: this might not be a vulnerability in most web server environments that support multiple threads, unless these issues can be demonstrated for code execution.
Patch / fix
- glibc Debian 14, Debian 13, Debian 12 2.7-1
debian advisories DEBIAN-CVE-2007-4840
Exploit prediction
3.15% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-20 Improper Input Validation
- Technology feeds
References
-
lists.opensuse.org
/opensuse-security-announce/2008-01/msg00006.html
vendor-advisory
-
gentoo.org
/security/en/glsa/glsa-200710-02.xml
vendor-advisory
-
securityfocus.com
/archive/1/491693/100/0/threaded
vendor-advisory
- issues.rpath.com /browse/RPL-1943
-
secunia.com
/advisories/28658
third-party-advisory
-
securityfocus.com
/archive/1/478730/100/0/threaded
mailing-list
-
secunia.com
/advisories/30040
third-party-advisory
-
secunia.com
/advisories/27659
third-party-advisory
-
securityreason.com
/securityalert/3122
third-party-advisory
- wiki.rpath.com /wiki/Advisories:rPSA-2007-0242
-
secunia.com
/advisories/27102
third-party-advisory
-
osvdb.org
/38916
vdb-entry
Sources
- CVE List CVE-2007-4840
- NVD CVE-2007-4840
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.