VulnSocial

CVE-1999-0445General(cisco / ios)

LOWCVSS 5.0 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

In Cisco routers under some versions of IOS 12.0 running NAT, some packets may not be filtered by input access list filters.

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0.0/ 10 priority

Sources & remediation

Other references

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

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

  • 1 mentions across 1 observed day

What's happening

  • General: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
cisco
Products
ios

12 versions affected across 1 product

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-04-16: 104-16
Signal classification1 categories
General
1100.0%
Full discourse1 post
  • Joe Klein @::1 & @FF0X: Network & Security Plumber@joeklein
    General

    @tullyfur @sekurlsa_pw #IPv4 has accumulated 249 #NAT-related vulnerabilities (#CVE-1999-0445 through #CVE-2026-33790)—a 27-year legacy of systemic weaknesses enabling persistent compromise. Your effort is better spent advancing #IPv6-only applications, devices, and networks.

    Post summary

    The post lists 249 NAT-related CVEs spanning 1999 to 2026 but offers no proof of concept, exploit details, active exploitation evidence, patches, technical specifics, or false‑positive claims, making it a general mention of vulnerabilities.

    10000129
    2.9K followersView on X
CPE platform detail12 entries

12 of 12 entries

PartVendorProductVersionTarget SWTarget HW
OSciscoios12.0--
OSciscoios12.0\(1\)w--
OSciscoios12.0\(1\)xa3--
OSciscoios12.0\(1\)xb--
OSciscoios12.0\(1\)xe--
OSciscoios12.0\(2\)xc--
OSciscoios12.0\(2\)xd--
OSciscoios12.0\(2\)xf--
OSciscoios12.0\(2\)xg--
OSciscoios12.0db--
OSciscoios12.0s--
OSciscoios12.0t--

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