How severe is CVE-2009-5157?

CVE-2009-5157 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2009-5157 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-5157?

CVE-2009-5157 affects Linksys Wag54g2 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-5157?

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-2009-5157 published?

CVE-2009-5157 was published on 2019-06-11 and last updated on 2026-06-16.

CVE-2009-5157

CVE-2009-5157 is a high-severity vulnerability in Linksys Wag54g2 Firmware with a CVSS 3.x base score of 8.8. 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-77.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-77
Affected product: Linksys Wag54g2 Firmware
Published: 2019-06-11
Last modified: 2026-06-16

Description

On Linksys WAG54G2 1.00.10 devices, there is authenticated command injection via shell metacharacters in the setup.cgi c4_ping_ipaddr variable.

Frequently asked questions

What is CVE-2009-5157?: On Linksys WAG54G2 1.00.10 devices, there is authenticated command injection via shell metacharacters in the setup.cgi c4_ping_ipaddr variable.
How severe is CVE-2009-5157?: CVE-2009-5157 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2009-5157 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-5157?: CVE-2009-5157 affects Linksys Wag54g2 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-5157?: 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-2009-5157 published?: CVE-2009-5157 was published on 2019-06-11 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:linksys:wag54g2_firmware:1.00.10:*:*:*:*:*:*:*

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