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Known exploited vulnerability

CVE-2008-4128

highCVSS 3.1 8.1In CISA KEVEPSS 34%Published · n/a

The short answer

CVE-2008-4128 affects n/a n/a and is rated high (CVSS 8.1). CISA added it to the Known Exploited Vulnerabilities catalog on 2026-07-13: attackers are using it, so patch it first.

What it is

Multiple cross-site request forgery (CSRF) vulnerabilities in the HTTP Administration component in Cisco IOS 12.4 on the 871 Integrated Services Router allow remote attackers to execute arbitrary commands via (1) a certain "show privilege" command to the /level/15/exec/- URI, and (2) a certain "alias exec" command to the /level/15/exec/-/configure/http URI. NOTE: some of these details are obtained from third party information.

Weakness: CWE-352.

Severity

8.1 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Exploited (CISA KEV)

Yes, since Jul 13, 2026

Federal due date Jul 16, 2026

EPSS, next 30 days

34%

Higher than 98% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
None

What CISA says to do

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for…

Affected products

n/a. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2008-4128 being exploited?

Yes. CISA added CVE-2008-4128 to its Known Exploited Vulnerabilities catalog on 2026-07-13, with a federal remediation due date of 2026-07-16.

How do I fix CVE-2008-4128?

CISA's required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for…

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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