How severe is CVE-2009-4877?

CVE-2009-4877 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2009-4877 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-4877?

CVE-2009-4877 primarily affects Plainblack Webgui. In total, 142 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-4877?

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

When was CVE-2009-4877 published?

CVE-2009-4877 was published on 2010-05-26 and last updated on 2026-06-16.

CVE-2009-4877

CVE-2009-4877 is a medium-severity vulnerability in Plainblack Webgui with a CVSS 2.0 base score of 6.8. 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-352.

Key facts

Severity: Medium (CVSS 2.0 base score 6.8)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Plainblack Webgui
Published: 2010-05-26
Last modified: 2026-06-16

Description

Multiple cross-site request forgery (CSRF) vulnerabilities in WebGUI before 7.7.14 allow remote attackers to hijack the authentication of users for unspecified requests via unknown vectors.

Frequently asked questions

What is CVE-2009-4877?: Multiple cross-site request forgery (CSRF) vulnerabilities in WebGUI before 7.7.14 allow remote attackers to hijack the authentication of users for unspecified requests via unknown vectors.
How severe is CVE-2009-4877?: CVE-2009-4877 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2009-4877 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-4877?: CVE-2009-4877 primarily affects Plainblack Webgui. In total, 142 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-4877?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-4877 published?: CVE-2009-4877 was published on 2010-05-26 and last updated on 2026-06-16.

References

Affected products (142)

cpe:2.3:a:plainblack:webgui:*:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.3.12:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.3.13:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.3.14:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.3.15:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.3.16:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.3.17:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.3.18:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.3.19:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.3.20:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.3.21:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.3.22:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.0:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.1:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.2:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.3:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.4:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.5:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.6:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.7:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.8:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.9:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.10:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.11:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.12:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.13:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.14:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.15:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.16:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.17:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.18:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.19:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.20:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.21:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.22:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.23:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.24:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.25:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.26:*:*:*:*:*:*:*
cpe:2.3:a:plainblack:webgui:7.4.27:*:*:*:*:*:*:*

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