VulnSocial

CVE-2004-1464Active Exploitation(cisco / ios)

LOWCVSS 5.9 · MEDIUMCISA KEV

Exploitation ongoing with high activity in latest observed window (2 mentions)

Immediate actions

  • Prioritize remediation for cisco ios systems immediately
  • Assume compromise if assets are exposed
  • Track advisory updates for patch or workaround availability

Recommended action window: Immediate (within 24h)

NVD description

Cisco IOS 12.2(15) and earlier allows remote attackers to cause a denial of service (refused VTY (virtual terminal) connections), via a crafted TCP connection to the Telnet or reverse Telnet port.

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3.5/ 10 priority

Sources & remediation

Listed in the CISA Known Exploited Vulnerabilities catalog. Federal remediation due date: 2023-06-09. Apply updates per vendor instructions.

Patch / fix
Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-400

Priority

LOW

Exploitation

ACTIVE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • ios

Threat summary

  • Active exploitation appears in 1 classified signals
  • 2 mentions across 1 observed day

What's happening

  • Active exploitation reported across 1 signal
  • Technical details provided in 1 signal
  • General: 1 classified signal
  • 2 total mentions across 1 day

Affected systems

Vendors
cisco
Products
ios

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-04-30: 2Active Exploitation · 2026-04-30: 1Technical Details · 2026-04-30: 104-30
Signal classification2 categories
Active Exploitation
150.0%
General
150.0%
Referenced assets1 URL
By indicator
Full discourse2 posts
  • Lyrie.ai@lyrie_ai
    General

    CVE-2004-1464: 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.

    Post summary

    The passage provides a brief technical description of an unspecified vulnerability in Cisco IOS that can block various network services, but contains no evidence of exploits, patches, or active use.

    1000069
    128 followersView on X
  • Lyrie.ai@lyrie_ai
    Active Exploitation

    https://research.lyrie.ai/research/active-exploit-cve-2004-1464-ios #lyrie #cybersecurity #CVE #threatintel #zerodayattack

    Post summary

    The article title indicates that CVE‑2004‑1464 is being actively exploited on iOS, whereas the provided text offers no PoC, exploit code, patch, or technical details.

    0000024
    128 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
OSciscoios---

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