CVE-2009-3838

Pegasus Mail 4.41 - Stack-based Buffer Overflow via Long POP3 Error Message

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2009-3838. PoCs published by Francis Provencher.

AI-analyzed exploit summary This exploit demonstrates a remote buffer overflow (BoF) in Pegasus Mail Client by sending an oversized payload to the POP3 port (110), causing a denial-of-service (DoS). The PoC uses a Perl script to send a malformed '-ERR' response with a large 'A' string to trigger the vulnerability.

Description

Stack-based buffer overflow in Pegasus Mail (PMail) 4.41 and possibly 4.51 allows remote POP3 servers to cause a denial of service (application crash) or possibly execute arbitrary code via a long error message.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Francis Provencher · textremotewindows
https://www.exploit-db.com/exploits/9957

This exploit demonstrates a remote buffer overflow (BoF) in Pegasus Mail Client by sending an oversized payload to the POP3 port (110), causing a denial-of-service (DoS). The PoC uses a Perl script to send a malformed '-ERR' response with a large 'A' string to trigger the vulnerability.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Pegasus Mail Client 4.51 (win32)
No auth needed
Prerequisites: Network access to the target's POP3 port (110)
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (9)

Core 9
Core References
Exploit vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/36797
Third Party Advisory, VDB Entry vdb-entry x_refsource_osvdb
http://osvdb.org/59261
Vendor Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2009/3026
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/37134
Exploit vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id?1023075
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/507377/100/0/threaded
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/53933

Scores

EPSS 0.0621
EPSS Percentile 92.6%

Details

CWE
CWE-119
Status published
Products (2)
pmail/pegasus_mail 4.41
pmail/pegasus_mail 4.51
Published Nov 02, 2009
Tracked Since Feb 18, 2026