Which products and versions are affected by CVE-2008-4128?

Affected: IOS (Cisco) versions 12.4. The full list is in the CVE brief.

Is CVE-2008-4128 being exploited in the wild?

It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jul 13, 2026.

Is CVE-2008-4128 in the CISA KEV catalog?

Yes. It was added on Jul 13, 2026 with a federal remediation due date of Jul 16, 2026.

Is there a public exploit for CVE-2008-4128?

Public exploit code is available.

Is there a fix for CVE-2008-4128?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2008-4128 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2008-4128

HighExploitedPublic exploit

Published Sep 18, 2008 · Updated Sep 24, 2026

Key Facts

Patch immediately

CVE-2008-4128 is a high-severity vulnerability (CVSS 8.1 v3.1) affecting IOS (Cisco).
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jul 13, 2026. Public exploit code is available.
EPSS estimates a 34% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

8.1

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

EPSS (30-day exploit likelihood)

34%

Higher than 98.3% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2008-4128 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

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.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
CISA KEV	Jul 13, 2026	Jul 16, 2026	Not reported
Industry KEV feed	Jul 13, 2026	Jul 16, 2026	Not reported
CIRCL KEV	Jul 13, 2026	Jul 16, 2026	Not reported
ENISA EUVD	Jul 13, 2026	n/a	Not reported

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 evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Affected Products

1 affected entries in total

Product	Affected versions	Fixed in
IOSCisco	12.4	n/a

Timeline

Publicly disclosed
Sep 18, 2008
Added to CISA KEV
Jul 13, 2026
Added to Industry KEV feed
Jul 13, 2026
Added to CIRCL KEV
Jul 13, 2026
Added to ENISA EUVD
Jul 13, 2026
Last updated
Sep 24, 2026

Weakness Type

CWE-352 Cross-Site Request Forgery (CSRF)

References

8 more references in the full CVE brief

FAQ

Common Questions.

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…
Affected: IOS (Cisco) versions 12.4. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jul 13, 2026.
Yes. It was added on Jul 13, 2026 with a federal remediation due date of Jul 16, 2026.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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