How severe is CVE-2009-0637?

CVE-2009-0637 has a CVSS 2.0 base score of 7.1, rated high severity.

Is CVE-2009-0637 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-0637?

CVE-2009-0637 primarily affects Cisco Ios. In total, 187 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-0637?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2009-0637 published?

CVE-2009-0637 was published on 2009-03-27 and last updated on 2026-06-16.

CVE-2009-0637

CVE-2009-0637 is a high-severity vulnerability in Cisco Ios with a CVSS 2.0 base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

Severity: High (CVSS 2.0 base score 7.1)
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Cisco Ios
Published: 2009-03-27
Last modified: 2026-06-16

Description

The SCP server in Cisco IOS 12.2 through 12.4, when Role-Based CLI Access is enabled, does not enforce the CLI view configuration for file transfers, which allows remote authenticated users with an attached CLI view to (1) read or (2) overwrite arbitrary files via an SCP command.

Frequently asked questions

What is CVE-2009-0637?: The SCP server in Cisco IOS 12.2 through 12.4, when Role-Based CLI Access is enabled, does not enforce the CLI view configuration for file transfers, which allows remote authenticated users with an attached CLI view to (1) read or (2) overwrite arbitrary files via an SCP command.
How severe is CVE-2009-0637?: CVE-2009-0637 has a CVSS 2.0 base score of 7.1, rated high severity.
Is CVE-2009-0637 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-0637?: CVE-2009-0637 primarily affects Cisco Ios. In total, 187 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-0637?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2009-0637 published?: CVE-2009-0637 was published on 2009-03-27 and last updated on 2026-06-16.

References

Affected products (187)

cpe:2.3:o:cisco:ios:12.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2b:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2bc:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2bw:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2bx:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2by:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2bz:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ca:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2cx:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2cy:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2cz:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2da:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2dd:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2dx:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ew:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ewa:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ex:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ey:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ez:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2fx:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2fy:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2fz:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2irb:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ixa:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ixb:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ixc:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ixd:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ixe:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ixf:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ixg:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ja:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2jk:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2l:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2mb:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2mc:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2rc:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2sb:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2sbc:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2sca:*:*:*:*:*:*:*

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