CVE-2016-9569: The cbstream.sys driver in Carbon Black 5.1.1.60603 allows local users with admin privileges to cause a denial

Routine

MEDIUM 4.4DOWNGRADE

CVE-2016-9569 is a medium-severity flaw (CVSS 4.4) affecting carbon black. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The cbstream.sys driver in Carbon Black 5.1.1.60603 allows local users with admin privileges to cause a denial of service (out-of-bounds read and system crash) via a large counter value in an 0x62430028 IOCTL call.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.4 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.3% (top 81%)
CISA exploited list	No
Weakness	CWE-125
Published	2018-02-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: carbonblack

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

Am I affected?

Timeline

2018-02-12 18:29 UTCPublished CVE record published
2026-06-17 00:56 UTCUpdated Record last modified

carbonblack carbon black DOWNGRADE

Affected: 5.1.1.60603

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.1.1.60603

1. Check installed version

apt-cache policy carbon-black || rpm -q carbon-black || carbon-black --version

2. No fixed release: DOWNGRADE to a release before 5.1.1.60603 (Debian / Ubuntu)

apt-cache madison carbon-black sudo apt install carbon-black=<VERSION_BEFORE_5.1.1.60603> sudo apt-mark hold carbon-black

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

dnf --showduplicates list carbon-black sudo dnf downgrade carbon-black-<VERSION_BEFORE_5.1.1.60603> sudo dnf versionlock add carbon-black

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-2016-9569?

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

Is CVE-2016-9569 being exploited?

CVE-2016-9569 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-2016-9569 affect?

CVE-2016-9569 affects carbon black. Severity is medium (CVSS 4.4). The cbstream.sys driver in Carbon Black 5.1.1.60603 allows local users with admin privileges to cause a denial of service (out-of-bounds read and system crash) via a large counter value in an 0x62430028 IOCTL call.

How urgent is CVE-2016-9569?

Priority 20/100. No elevated risk signals yet.

Related CVEs

CVE-2016-9570 HIGH 7.5 DOWNGRADE cb.exe in Carbon Black 5.1.1.60603 allows attackers to cause a denial of service (out-of-bounds read, invalid
CVE-2016-9568 CRITICAL 9.8 DOWNGRADE A security design issue can allow an unprivileged user to interact with the Carbon Black Sensor and perform un

References

← Back to latest CVEs