CVE-2016-10721: partclone.restore in Partclone 0.2.87 is prone to a heap-based buffer overflow vulnerability due to insufficie

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2016-10721 is a critical-severity flaw (CVSS 9.8) affecting partclone. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

partclone.restore in Partclone 0.2.87 is prone to a heap-based buffer overflow vulnerability due to insufficient validation of the partclone image header. An attacker may be able to execute arbitrary code in the context of the user running the affected application.

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	2.1% (top 18%)
CISA exploited list	No
Weakness	CWE-119
Published	2018-05-02
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: partclone

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

Am I affected?

Timeline

2018-05-02 23:29 UTCPublished CVE record published
2026-06-17 00:40 UTCUpdated Record last modified

partclone partclone DOWNGRADE

Affected: 0.2.87

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.2.87

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.2.87 (Debian / Ubuntu)

apt-cache madison partclone sudo apt install partclone=<VERSION_BEFORE_0.2.87> sudo apt-mark hold partclone

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

dnf --showduplicates list partclone sudo dnf downgrade partclone-<VERSION_BEFORE_0.2.87> sudo dnf versionlock add partclone

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-2016-10721?

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

Is CVE-2016-10721 being exploited?

CVE-2016-10721 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-2016-10721 affect?

CVE-2016-10721 affects partclone. Severity is critical (CVSS 9.8). partclone.restore in Partclone 0.2.87 is prone to a heap-based buffer overflow vulnerability due to insufficient validation of the partclone image header. An attacker may be able to execute arbitrary code in the context of the user running

How urgent is CVE-2016-10721?

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

Related CVEs

CVE-2017-6596 MEDIUM 5.5 DOWNGRADE partclone.chkimg in partclone 0.2.89 is prone to a heap-based buffer overflow vulnerability due to insufficien
CVE-2016-10722 CRITICAL 9.8 UPGRADE partclone.fat in Partclone before 0.2.88 is prone to a heap-based buffer overflow vulnerability due to insuffi

References

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