CVE-2007-0247Squid Vulnerability
squid/src/ftp.c in Squid before 2.6.STABLE7 allows remote FTP servers to cause a denial of service (core dump) via crafted FTP directory listing responses, possibly related to the (1) ftpListingFinish and (2) ftpHtmlifyListEntry functions.
Published Jan 16, 2007 · Updated Aug 4, 2026 · Also known as DEBIAN-CVE-2007-0247
Key Facts
Routine patching- CVE-2007-0247 is a medium-severity vulnerability (CVSS 5.0 v2) affecting Squid.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 20% probability of exploitation in the next 30 days.
- Fixed versions are available, including Squid 2.6.5-4.
- Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.
Scores
CVSS v2
5.0
AV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS (30-day exploit likelihood)
20%
Higher than 97.4% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
34/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
1
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Description
squid/src/ftp.c in Squid before 2.6.STABLE7 allows remote FTP servers to cause a denial of service (core dump) via crafted FTP directory listing responses, possibly related to the (1) ftpListingFinish and (2) ftpHtmlifyListEntry functions.
Affected Products
17 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| SquidSquid | 2.6.stable1, 2.6.stable2, 2.6.stable3, 2.6.stable4, 2.6.stable5, 2.6.stable6 | 2.6.5-4 |
Patched Releases
Squid
2.6.5-4
Timeline
Publicly disclosed
Jan 16, 2007
Last updated
Aug 4, 2026
Weakness Type
- CWE-399
References
- advisorysecurity-tracker.debian.org · CVE-2007-0247
- advisory23767
- advisory23805
- advisory23810
- advisory23837
FAQ
Common Questions.
squid/src/ftp.c in Squid before 2.6.STABLE7 allows remote FTP servers to cause a denial of service (core dump) via crafted FTP directory listing responses, possibly related to the (1) ftpListingFinish and (2) ftpHtmlifyListEntry functions.
Affected: Squid versions 2.6.stable1, 2.6.stable2, 2.6.stable3, 2.6.stable4, 2.6.stable5, 2.6.stable6. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Squid 2.6.5-4.
Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.
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