CVE-2018-12932: PlayEnhMetaFileRecord in enhmetafile.c in Wine 3.7 allows attackers to cause a denial of service (heap-based b

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2018-12932 is a critical-severity flaw (CVSS 9.8) affecting wine. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PlayEnhMetaFileRecord in enhmetafile.c in Wine 3.7 allows attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact by triggering a large pAlphaBlend->cbBitsSrc value.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.4% (top 16%)
CISA exploited list	No
Weakness	CWE-787
Published	2018-06-28
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: winehq

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

Am I affected?

Timeline

2018-06-28 14:29 UTCPublished CVE record published
2026-06-17 01:38 UTCUpdated Record last modified

winehq wine DOWNGRADE

Affected: 3.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.7

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.7 (Debian / Ubuntu)

apt-cache madison wine sudo apt install wine=<VERSION_BEFORE_3.7> sudo apt-mark hold wine

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

dnf --showduplicates list wine sudo dnf downgrade wine-<VERSION_BEFORE_3.7> sudo dnf versionlock add wine

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-2018-12932?

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

Is CVE-2018-12932 being exploited?

CVE-2018-12932 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-2018-12932 affect?

CVE-2018-12932 affects wine. Severity is critical (CVSS 9.8). PlayEnhMetaFileRecord in enhmetafile.c in Wine 3.7 allows attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact by triggering a large pAlphaBlend->cbBitsSrc value.

How urgent is CVE-2018-12932?

Priority 60/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2018-12933 CRITICAL 9.8 DOWNGRADE PlayEnhMetaFileRecord in enhmetafile.c in Wine 3.7 allows attackers to cause a denial of service (out-of-bound

References

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