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CVE-2007-4565

15
FAUCET Score

CVE-2007-4565 describes a denial-of-service vulnerability in fetchmail versions prior to 6.3.9, specifically within the sink.c component. An unauthenticated remote attacker can trigger a NULL dereference and application crash by refusing specific warning messages sent via SMTP. This vulnerability has a CVSS score of 5.0, indicating a low severity with potential for partial availability impact. There is no known active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.6.5CPE matchmatch criteria
cpe:2.3:a:fetchmail:fetchmail:4.6.5:*:*:*:*:*:*:*
<= 6.3.9CPE matchmatch criteria
cpe:2.3:a:fetchmail:fetchmail:*:rc2:*:*:*:*:*:*
4.5.1CPE matchmatch criteria
cpe:2.3:a:fetchmail:fetchmail:4.5.1:*:*:*:*:*:*:*
4.5.2CPE matchmatch criteria
cpe:2.3:a:fetchmail:fetchmail:4.5.2:*:*:*:*:*:*:*
4.5.3CPE matchmatch criteria
cpe:2.3:a:fetchmail:fetchmail:4.5.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.97%
Probability of exploitation in next 30 days
EPSS Percentile
78.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0197 is in the 66th percentile among its peer group of 23,701 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: fetchmail-0:6.2.0-3.el3.5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: fetchmail-0:6.2.5-6.0.1.el4_8.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: fetchmail-0:6.3.6-1.1.el5_3.1
View patch

Vendor Advisories (1)

redhatCVE-2007-4565Low

Fetchmail NULL pointer dereference

Aug 28, 2007

References

fetchmail.berlios.de / fetchmail-SA-2007-02.txt
lists.apple.com / archives/security-announce/2009/Feb/msg00000.html
lists.opensuse.org / opensuse-security-announce/2007-10/msg00008.html
mknod.org / svn/fetchmail/branches/BRANCH_6-3/fetchmail-SA-2007-02.txt
Patch
osvdb.org / 45833
secunia.com / advisories/27399
Vendor Advisory
secunia.com / advisories/33937
Vendor Advisory
securityreason.com / securityalert/3074
exchange.xforce.ibmcloud.com / vulnerabilities/36385
issues.rpath.com / browse/RPL-1690
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10528
support.apple.com / kb/HT3438
debian.org / security/2007/dsa-1377
mandriva.com / security/advisories
securityfocus.com / archive/1/478798/100/0/threaded
securityfocus.com / archive/1/493388/100/0/threaded
securityfocus.com / bid/25495
securitytracker.com / id
trustix.org / errata/2007/0028
ubuntu.com / usn/usn-520-1
vupen.com / english/advisories/2007/3032
vupen.com / english/advisories/2009/0422