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Exploited vulnerability · CISA KEV

Is CVE-2004-1464 exploited? Yes: in CISA KEV since 19 May 2023

Gociux · Cisco IOS · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2004-1464, Cisco IOS Denial-of-Service Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 19 May 2023, 6669 days after it was published. It affects Cisco IOS. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 19 May 2023
ransomwareNot knownno confirmed use
EPSStop 10%more likely than most to be exploited
severity5.9CVSS 3.1 · medium
US federal due9 Jun 2023BOD 22-01 deadline

What it is

Cisco IOS contains an unspecified vulnerability that may block further telnet, reverse telnet, Remote Shell (RSH), Secure Shell (SSH), and in some cases, Hypertext Transport Protocol (HTTP) access to the Cisco device.

VendorCisco (103 exploited CVEs in KEV)
ProductIOS
VulnerabilityCisco IOS Denial-of-Service Vulnerability
Weaknessnot specified
Published13 Feb 2005
Added to KEV19 May 2023
Reported by (CNA)mitre

What to do

  1. Check whether you run it. Look for IOS in your asset inventory, including appliances and cloud images. Stack check lists every exploited Cisco CVE at once.
  2. Apply the fix. Apply updates per vendor instructions.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 13 Feb 2005.
  4. Get told next time. Email alerts when CISA adds a CVE for Cisco.

Other exploited CVEs in IOS

References

Questions

Is CVE-2004-1464 being exploited?

Yes. CISA added CVE-2004-1464 to the Known Exploited Vulnerabilities catalog on 19 May 2023, which means there is reliable evidence of exploitation in the wild.

Is CVE-2004-1464 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2004-1464?

Apply updates per vendor instructions. Check Cisco's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected IOS and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in May 2023 · Cisco scorecard · act-now radar.

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