CVE-2016-9011: The wmf_malloc function in api.c in libwmf 0.2.8.4 allows remote attackers to cause a denial of service (appli

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MEDIUM 5.5DOWNGRADE

CVE-2016-9011 is a medium-severity flaw (CVSS 5.5) affecting libwmf. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The wmf_malloc function in api.c in libwmf 0.2.8.4 allows remote attackers to cause a denial of service (application crash) via a crafted wmf file, which triggers a memory allocation failure.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	2.7% (top 14%)
CISA exploited list	No
Weakness	CWE-119
Published	2017-03-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: wvware

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-03-23 18:59 UTCPublished CVE record published
2026-06-17 00:55 UTCUpdated Record last modified

wvware libwmf DOWNGRADE

Affected: 0.2.8.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.2.8.4

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.2.8.4 (Debian / Ubuntu)

apt-cache madison libwmf sudo apt install libwmf=<VERSION_BEFORE_0.2.8.4> sudo apt-mark hold libwmf

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

dnf --showduplicates list libwmf sudo dnf downgrade libwmf-<VERSION_BEFORE_0.2.8.4> sudo dnf versionlock add libwmf

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-2016-9011?

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

Is CVE-2016-9011 being exploited?

CVE-2016-9011 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-2016-9011 affect?

CVE-2016-9011 affects libwmf. Severity is medium (CVSS 5.5). The wmf_malloc function in api.c in libwmf 0.2.8.4 allows remote attackers to cause a denial of service (application crash) via a crafted wmf file, which triggers a memory allocation failure.

How urgent is CVE-2016-9011?

Priority 41/100. No elevated risk signals yet.

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References

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