How severe is CVE-2011-0637?

CVE-2011-0637 has a CVSS 2.0 base score of 4.9, rated medium severity.

Is CVE-2011-0637 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-0637?

CVE-2011-0637 affects Ibm Aix. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2011-0637?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-0637 published?

CVE-2011-0637 was published on 2011-01-25 and last updated on 2026-06-16.

CVE-2011-0637

CVE-2011-0637 is a medium-severity vulnerability in Ibm Aix with a CVSS 2.0 base score of 4.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 4.9)
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ibm Aix
Published: 2011-01-25
Last modified: 2026-06-16

Description

The FC SCSI protocol driver in IBM AIX 6.1 does not verify that a timer is unused before deallocating this timer, which might allow attackers to cause a denial of service (system crash) via unspecified vectors.

Frequently asked questions

What is CVE-2011-0637?: The FC SCSI protocol driver in IBM AIX 6.1 does not verify that a timer is unused before deallocating this timer, which might allow attackers to cause a denial of service (system crash) via unspecified vectors.
How severe is CVE-2011-0637?: CVE-2011-0637 has a CVSS 2.0 base score of 4.9, rated medium severity.
Is CVE-2011-0637 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-0637?: CVE-2011-0637 affects Ibm Aix. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-0637?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-0637 published?: CVE-2011-0637 was published on 2011-01-25 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:ibm:aix:6.1:*:*:*:*:*:*:*

More vulnerabilities in Ibm Aix

CVE-2025-36250 — Critical (CVSS 10.0): IBM AIX 7.2, and 7.3 and IBM VIOS 3.1, and 4.1 NIM server (formerly known as NIM master) service (nimesis) could allow…
CVE-2024-56346 — Critical (CVSS 10.0): IBM AIX 7.2 and 7.3 nimesis NIM master service could allow a remote attacker to execute arbitrary commands due to…
CVE-2010-3187 — Critical (CVSS 10.0): Buffer overflow in ftpd in IBM AIX 5.3 and earlier allows remote attackers to execute arbitrary code via a long NLST…
CVE-2010-1039 — Critical (CVSS 10.0): Format string vulnerability in the _msgout function in rpc.pcnfsd in IBM AIX 6.1, 5.3, and earlier; IBM VIOS 2.1, 1.5,…
CVE-2009-3699 — Critical (CVSS 10.0): Stack-based buffer overflow in libcsa.a (aka the calendar daemon library) in IBM AIX 5.x through 5.3.10 and 6.x through…
CVE-2009-3517 — Critical (CVSS 10.0): nfs.ext in IBM AIX 5.3.x through 5.3.9 and 6.1.0 through 6.1.2 does not properly use the nfs_portmon setting, which…

All CVEs affecting Ibm Aix →