CVE-2006-2549: Stack-based buffer overflow in PDF Form Filling and Flattening Tool before 3.1.0.12 allows remote attackers to

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HIGH 7.5DOWNGRADE

CVE-2006-2549 is a high-severity flaw (CVSS 7.5) affecting pdf form filling and flattening tool. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stack-based buffer overflow in PDF Form Filling and Flattening Tool before 3.1.0.12 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via long field names.

Why this priority

High severity
EPSS top 9%: 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	4.3% (top 9%)
CISA exploited list	No
Published	2006-05-24
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: pdf tools ag

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

Am I affected?

Timeline

2006-05-24 23:02 UTCPublished CVE record published
2026-06-16 22:25 UTCUpdated Record last modified

pdf tools ag pdf form filling and flattening tool DOWNGRADE

Affected: 3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0

1. Check installed version

apt-cache policy pdf-form-filling-and-flattening-tool || rpm -q pdf-form-filling-and-flattening-tool || pdf-form-filling-and-flattening-tool --version

2. No fixed release: DOWNGRADE to a release before 3.0 (Debian / Ubuntu)

apt-cache madison pdf-form-filling-and-flattening-tool sudo apt install pdf-form-filling-and-flattening-tool=<VERSION_BEFORE_3.0> sudo apt-mark hold pdf-form-filling-and-flattening-tool

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

dnf --showduplicates list pdf-form-filling-and-flattening-tool sudo dnf downgrade pdf-form-filling-and-flattening-tool-<VERSION_BEFORE_3.0> sudo dnf versionlock add pdf-form-filling-and-flattening-tool

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.

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-2006-2549?

pdf form filling and flattening tool: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2006-2549 being exploited?

CVE-2006-2549 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-2006-2549 affect?

CVE-2006-2549 affects pdf form filling and flattening tool. Severity is high (CVSS 7.5). Stack-based buffer overflow in PDF Form Filling and Flattening Tool before 3.1.0.12 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via long field names.

How urgent is CVE-2006-2549?

Priority 54/100. High severity; EPSS top 9%: very likely to be exploited; Public exploit reference

References

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