CVE-2009-1029: Stack-based buffer overflow in POP Peeper 3.4.0.0 and earlier allows remote POP3 servers to execute arbitrary

Q: How do I fix CVE-2009-1029?

pop peeper: upgrade to newer than 3.4.0.0. Exact commands for each OS are on this page.

Q: Is CVE-2009-1029 being exploited?

CVE-2009-1029 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2009-1029 affect?

CVE-2009-1029 affects pop peeper. Severity is high (CVSS 9.3). Stack-based buffer overflow in POP Peeper 3.4.0.0 and earlier allows remote POP3 servers to execute arbitrary code via a long Date header, related to Imap.dll.

Q: How urgent is CVE-2009-1029?

Priority 62/100. Critical severity; EPSS top 2%: very likely to be exploited; Public exploit reference

This week

HIGH 9.3UPGRADE

CVE-2009-1029 is a high-severity flaw (CVSS 9.3) affecting pop peeper. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stack-based buffer overflow in POP Peeper 3.4.0.0 and earlier allows remote POP3 servers to execute arbitrary code via a long Date header, related to Imap.dll.

Why this priority

Critical severity
EPSS top 2%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	9.3 (High)
EPSS exploit chance	31.8% (top 2%)
CISA exploited list	No
Weakness	CWE-119
Published	2009-03-20
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: poppeeper

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2009-03-20 00:30 UTCPublished CVE record published
2026-06-16 23:06 UTCUpdated Record last modified

poppeeper pop peeper UPGRADE

Affected: <= 3.4.0.0 · 2.4.3 · 3.0 · 3.0.1

Fixed in: newer than 3.4.0.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy pop-peeper || rpm -q pop-peeper || pop-peeper --version

2. UPGRADE to newer than 3.4.0.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade pop-peeper

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pop-peeper

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: POP Peeper 3.4 - DATE Buffer Overflow (Metasploit)
Exploit-DB: POP Peeper 3.4 - UIDL Buffer Overflow (Metasploit)
Exploit-DB: POP Peeper 3.4.0.0 - Date Remote Buffer Overflow
Metasploit: POP Peeper v3.4 DATE Buffer Overflow
Metasploit: POP Peeper v3.4 UIDL Buffer Overflow

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2009-1029?

pop peeper: upgrade to newer than 3.4.0.0. Exact commands for each OS are on this page.

Is CVE-2009-1029 being exploited?

CVE-2009-1029 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2009-1029 affect?

CVE-2009-1029 affects pop peeper. Severity is high (CVSS 9.3). Stack-based buffer overflow in POP Peeper 3.4.0.0 and earlier allows remote POP3 servers to execute arbitrary code via a long Date header, related to Imap.dll.

How urgent is CVE-2009-1029?

Priority 62/100. Critical severity; EPSS top 2%: very likely to be exploited; Public exploit reference

References

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