CVE-2007-2771: Stack-based buffer overflow in the LEAD Technologies LeadTools JPEG 2000 LEADJ2K.LEADJ2K.140 ActiveX control (

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HIGH 9.3DOWNGRADE

CVE-2007-2771 is a high-severity flaw (CVSS 9.3) affecting leadtools jpeg 2000. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stack-based buffer overflow in the LEAD Technologies LeadTools JPEG 2000 LEADJ2K.LEADJ2K.140 ActiveX control (LTJ2K14.ocx) 14.5.0.35 allows remote attackers to execute arbitrary code via a long BitmapDataPath property.

Why this priority

Critical 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	9.3 (High)
EPSS exploit chance	9.0% (top 5%)
CISA exploited list	No
Published	2007-05-21
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: lead technologies

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

Am I affected?

Timeline

2007-05-21 21:30 UTCPublished CVE record published
2026-06-16 22:40 UTCUpdated Record last modified

lead technologies leadtools jpeg 2000 DOWNGRADE

Affected: 14.5.0.35

Fixed in: no fixed release known

Safe to downgrade to: a release before 14.5.0.35

1. Check installed version

apt-cache policy leadtools-jpeg-2000 || rpm -q leadtools-jpeg-2000 || leadtools-jpeg-2000 --version

2. No fixed release: DOWNGRADE to a release before 14.5.0.35 (Debian / Ubuntu)

apt-cache madison leadtools-jpeg-2000 sudo apt install leadtools-jpeg-2000=<VERSION_BEFORE_14.5.0.35> sudo apt-mark hold leadtools-jpeg-2000

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

dnf --showduplicates list leadtools-jpeg-2000 sudo dnf downgrade leadtools-jpeg-2000-<VERSION_BEFORE_14.5.0.35> sudo dnf versionlock add leadtools-jpeg-2000

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: LeadTools JPEG 2000 - COM Object Remote Stack 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-2007-2771?

leadtools jpeg 2000: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2007-2771 being exploited?

CVE-2007-2771 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-2007-2771 affect?

CVE-2007-2771 affects leadtools jpeg 2000. Severity is high (CVSS 9.3). Stack-based buffer overflow in the LEAD Technologies LeadTools JPEG 2000 LEADJ2K.LEADJ2K.140 ActiveX control (LTJ2K14.ocx) 14.5.0.35 allows remote attackers to execute arbitrary code via a long BitmapDataPath property.

How urgent is CVE-2007-2771?

Priority 61/100. Critical severity; EPSS top 5%: very likely to be exploited; Public exploit reference

References

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