CVE-2006-2909: Stack-based buffer overflow in the info tip shell extension (zipinfo.dll) in PicoZip 4.01 allows remote attack

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HIGH 7.5DOWNGRADE

CVE-2006-2909 is a high-severity flaw (CVSS 7.5) affecting picozip. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stack-based buffer overflow in the info tip shell extension (zipinfo.dll) in PicoZip 4.01 allows remote attackers to execute arbitrary code via a long filename in an (1) ACE, (2) RAR, or (3) ZIP archive, which is triggered when the user moves the mouse over the archive.

Why this priority

High severity
EPSS top 5%: very likely to be exploited
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	9.0% (top 5%)
CISA exploited list	No
Published	2006-06-16
Last modified	2026-06-16

Publisher (CNA): Flexera Software LLC · Vendor: picozip

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

Am I affected?

Timeline

2006-06-16 10:02 UTCPublished CVE record published
2026-06-16 22:26 UTCUpdated Record last modified

picozip picozip DOWNGRADE

Affected: 4.01

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.01

1. Check installed version

apt-cache policy picozip || rpm -q picozip || picozip --version

2. No fixed release: DOWNGRADE to a release before 4.01 (Debian / Ubuntu)

apt-cache madison picozip sudo apt install picozip=<VERSION_BEFORE_4.01> sudo apt-mark hold picozip

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list picozip sudo dnf downgrade picozip-<VERSION_BEFORE_4.01> sudo dnf versionlock add picozip

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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: Pico Zip 4.01 - 'Filename' Local 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-2006-2909?

picozip: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2006-2909 being exploited?

CVE-2006-2909 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-2006-2909 affect?

CVE-2006-2909 affects picozip. Severity is high (CVSS 7.5). Stack-based buffer overflow in the info tip shell extension (zipinfo.dll) in PicoZip 4.01 allows remote attackers to execute arbitrary code via a long filename in an (1) ACE, (2) RAR, or (3) ZIP archive, which is triggered when the user mov

How urgent is CVE-2006-2909?

Priority 55/100. High severity; EPSS top 5%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2007-2536 HIGH 7.8 DOWNGRADE PicoZip allows remote attackers to cause a denial of service (infinite loop) via a ZOO archive with a direntry
CVE-2007-2058 MEDIUM 6.8 DOWNGRADE Directory traversal vulnerability in Acubix PicoZip 4.02 allows user-assisted remote attackers to overwrite ar

References

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