CVE-2010-5156: Race condition in CA Internet Security Suite Plus 2010 6.0.0.272 on Windows XP allows local users to bypass ke

Routine

MEDIUM 6.2DOWNGRADE

CVE-2010-5156 is a medium-severity flaw (CVSS 6.2) affecting internet security suite 2010. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Race condition in CA Internet Security Suite Plus 2010 6.0.0.272 on Windows XP allows local users to bypass kernel-mode hook handlers, and execute dangerous code that would otherwise be blocked by a handler but not blocked by signature-based malware detection, via certain user-space memory changes during hook-handler execution, aka an argument-switch attack or a KHOBE attack. NOTE: this issue is disputed by some third parties because it is a fla

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.2 (Medium)
EPSS exploit chance	0.3% (top 77%)
CISA exploited list	No
Weakness	CWE-362
Published	2012-08-25
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: ca

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

Am I affected?

Timeline

2012-08-25 21:55 UTCPublished CVE record published
2026-06-16 23:26 UTCUpdated Record last modified

ca internet security suite 2010 DOWNGRADE

Affected: 6.0.0.272

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.0.0.272

1. Check installed version

apt-cache policy internet-security-suite-2010 || rpm -q internet-security-suite-2010 || internet-security-suite-2010 --version

2. No fixed release: DOWNGRADE to a release before 6.0.0.272 (Debian / Ubuntu)

apt-cache madison internet-security-suite-2010 sudo apt install internet-security-suite-2010=<VERSION_BEFORE_6.0.0.272> sudo apt-mark hold internet-security-suite-2010

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

dnf --showduplicates list internet-security-suite-2010 sudo dnf downgrade internet-security-suite-2010-<VERSION_BEFORE_6.0.0.272> sudo dnf versionlock add internet-security-suite-2010

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-2010-5156?

internet security suite 2010: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2010-5156 being exploited?

CVE-2010-5156 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-2010-5156 affect?

CVE-2010-5156 affects internet security suite 2010. Severity is medium (CVSS 6.2). Race condition in CA Internet Security Suite Plus 2010 6.0.0.272 on Windows XP allows local users to bypass kernel-mode hook handlers, and execute dangerous code that would otherwise be blocked by a handler but not blocked by signature-base

How urgent is CVE-2010-5156?

Priority 27/100. No elevated risk signals yet.

Software pages

Windows vulnerabilities

References

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