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Vulnerability record · CVE-2007-0251 · published 16 January 2007

CVE-2007-0251: Snort vulnerability

Snort · Snort

Integer underflow in the DecodeGRE function in src/decode.c in Snort 2.6.1.2 allows remote attackers to trigger dereferencing of certain memory locations via crafted GRE packets, which may cause corruption of log files or writing of sensitive information into log files.

7.8 CVSS 2.0 High EPSS 2.4% · top 16.6%
7.8CVSS 2.0 base score
2.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
18References
16 Jun 2026Last modified by NVD

Description

Integer underflow in the DecodeGRE function in src/decode.c in Snort 2.6.1.2 allows remote attackers to trigger dereferencing of certain memory locations via crafted GRE packets, which may cause corruption of log files or writing of sensitive information into log files.

AV:N/AC:L/Au:N/C:N/I:N/A:C

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://labs.calyptix.com/advisories/CX-2007-01.txt
http://osvdb.org/32095
http://osvdb.org/33464
http://securityreason.com/securityalert/2165
http://securitytracker.com/id?1017507
http://www.securityfocus.com/archive/1/456598/100/0/threaded
http://www.securityfocus.com/bid/22004
http://www.snort.org/got_source/source.html
http://www.vupen.com/english/advisories/2007/0152
http://labs.calyptix.com/advisories/CX-2007-01.txt
http://osvdb.org/32095
http://osvdb.org/33464
http://securityreason.com/securityalert/2165
http://securitytracker.com/id?1017507
http://www.securityfocus.com/archive/1/456598/100/0/threaded
http://www.securityfocus.com/bid/22004
http://www.snort.org/got_source/source.html
http://www.vupen.com/english/advisories/2007/0152

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2007-0251), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.