CVE-2011-1049: Buffer overflow in the Mach-O input file loader in Hex-Rays IDA Pro 5.7 and 6.0 allows user-assisted remote at

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MEDIUM 6.8DOWNGRADE

CVE-2011-1049 is a medium-severity flaw (CVSS 6.8) affecting ida. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in the Mach-O input file loader in Hex-Rays IDA Pro 5.7 and 6.0 allows user-assisted remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted Macho-O file.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	3.7% (top 10%)
CISA exploited list	No
Weakness	CWE-119
Published	2011-02-21
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: hex-rays

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

Am I affected?

Timeline

2011-02-21 19:00 UTCPublished CVE record published
2026-06-16 23:28 UTCUpdated Record last modified

hex-rays ida DOWNGRADE

Affected: 5.7 · 6.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.7

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 5.7 (Debian / Ubuntu)

apt-cache madison ida sudo apt install ida=<VERSION_BEFORE_5.7> sudo apt-mark hold ida

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

dnf --showduplicates list ida sudo dnf downgrade ida-<VERSION_BEFORE_5.7> sudo dnf versionlock add ida

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-2011-1049?

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

Is CVE-2011-1049 being exploited?

CVE-2011-1049 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-2011-1049 affect?

CVE-2011-1049 affects ida. Severity is medium (CVSS 6.8). Buffer overflow in the Mach-O input file loader in Hex-Rays IDA Pro 5.7 and 6.0 allows user-assisted remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted Macho-O file.

How urgent is CVE-2011-1049?

Priority 46/100. No elevated risk signals yet.

Related CVEs

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CVE-2014-9458 HIGH 10.0 UPGRADE Heap-based buffer overflow in the GDB debugger module in Hex-Rays IDA Pro before 6.6 cumulative fix 2014-12-24
CVE-2011-1054 HIGH 10.0 DOWNGRADE Unspecified vulnerability in the PEF input file loader in Hex-Rays IDA Pro 5.7 and 6.0 has unknown impact and
CVE-2011-1053 MEDIUM 4.3 DOWNGRADE Unspecified vulnerability in the Mach-O input file loader in Hex-Rays IDA Pro 5.7 and 6.0 allows user-assisted
CVE-2011-1052 HIGH 10.0 DOWNGRADE Integer overflow in the PSX/GEOS input file loaders in Hex-Rays IDA Pro 5.7 and 6.0 has unknown impact and att

References

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