CVE-2012-6558: Heap-based buffer overflow in HeavenTools PE Explorer 1.99 R6 allows remote attackers to execute arbitrary cod

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HIGH 9.3DOWNGRADE

CVE-2012-6558 is a high-severity flaw (CVSS 9.3) affecting pe explorer. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Heap-based buffer overflow in HeavenTools PE Explorer 1.99 R6 allows remote attackers to execute arbitrary code via the size value for a string in the resource section of a Portable Executable (PE) file.

Why this priority

Critical severity
EPSS top 7%: 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	5.5% (top 7%)
CISA exploited list	No
Weakness	CWE-119
Published	2013-05-23
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: heaventools

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

Am I affected?

Timeline

2013-05-23 15:55 UTCPublished CVE record published
2026-06-16 23:48 UTCUpdated Record last modified

heaventools pe explorer DOWNGRADE

Affected: 1.99.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.99.6

1. Check installed version

apt-cache policy pe-explorer || rpm -q pe-explorer || pe-explorer --version

2. No fixed release: DOWNGRADE to a release before 1.99.6 (Debian / Ubuntu)

apt-cache madison pe-explorer sudo apt install pe-explorer=<VERSION_BEFORE_1.99.6> sudo apt-mark hold pe-explorer

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

dnf --showduplicates list pe-explorer sudo dnf downgrade pe-explorer-<VERSION_BEFORE_1.99.6> sudo dnf versionlock add pe-explorer

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-2012-6558?

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

Is CVE-2012-6558 being exploited?

CVE-2012-6558 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-2012-6558 affect?

CVE-2012-6558 affects pe explorer. Severity is high (CVSS 9.3). Heap-based buffer overflow in HeavenTools PE Explorer 1.99 R6 allows remote attackers to execute arbitrary code via the size value for a string in the resource section of a Portable Executable (PE) file.

How urgent is CVE-2012-6558?

Priority 61/100. Critical severity; EPSS top 7%: very likely to be exploited; Public exploit reference

References

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