CVE-2008-4166
Integer overflow in the JavaScript engine in Avant Browser 11.7 Build 9 and earlier allows remote attackers to cause a denial of service (application crash) by attempting to URL encode a string containing many instances of an invalid character.
Does this matter?
A public exploit is published in Exploit-DB (verified), so the technical barrier is gone even though the severity is medium and EPSS is 2.2%. Treat it as high on anything reachable from the internet.
Description
Integer overflow in the JavaScript engine in Avant Browser 11.7 Build 9 and earlier allows remote attackers to cause a denial of service (application crash) by attempting to URL encode a string containing many instances of an invalid character.
- CVSS 2.0
- 4.3 MEDIUMAV:N/AC:M/Au:N/C:N/I:N/A:P
- EPSS
- 2.18% probability · 82th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 12 September 2008
- CISA KEV
- Not listed
- Weakness
- CWE-189
- Affected
- avantbrowser/avant browser
- Source
- cve@mitre.org
EPSS 2.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://securityreason.com/securityalert/4284
- http://www.securityfocus.com/archive/1/496301/100/0/threaded
- http://www.securityfocus.com/bid/31155Exploit
- https://exchange.xforce.ibmcloud.com/vulnerabilities/45121
- http://securityreason.com/securityalert/4284
- http://www.securityfocus.com/archive/1/496301/100/0/threaded
- http://www.securityfocus.com/bid/31155Exploit
- https://exchange.xforce.ibmcloud.com/vulnerabilities/45121
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.