CVE-2007-1030
Niels Provos libevent 1.2 and 1.2a allows remote attackers to cause a denial of service (infinite loop) via a DNS response containing a label pointer that references its own offset.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.11%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Niels Provos libevent 1.2 and 1.2a allows remote attackers to cause a denial of service (infinite loop) via a DNS response containing a label pointer that references its own offset.
- CVSS 2.0
- 7.8 HIGHAV:N/AC:L/Au:N/C:N/I:N/A:C
- EPSS
- 3.11% probability · 88th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- niels provos/libevent
- Source
- cve@mitre.org
EPSS 3.1% 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.
References
- http://monkey.org/~provos/libevent/
- http://osvdb.org/33228
- http://secunia.com/advisories/24181Vendor Advisory
- http://securityreason.com/securityalert/2268
- http://www.securityfocus.com/archive/1/460530/100/0/threaded
- http://www.securityfocus.com/bid/22606Patch
- http://www.vupen.com/english/advisories/2007/0647
- http://monkey.org/~provos/libevent/
- http://osvdb.org/33228
- http://secunia.com/advisories/24181Vendor Advisory
- http://securityreason.com/securityalert/2268
- http://www.securityfocus.com/archive/1/460530/100/0/threaded
- http://www.securityfocus.com/bid/22606Patch
- http://www.vupen.com/english/advisories/2007/0647
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.