VulnSocial

CVE-2026-20301Disclosure(cisco / ios)

LOWCVSS 8.6 · HIGH

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

A vulnerability in the Extensible Messaging Client Protocol (XMCP), also referred to as the External Client protocol, of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling of malformed XMCP packets. An attacker could exploit this vulnerability by sending a malformed XMCP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to reload unexpectedly, resulting in a DoS condition. The attacker does not need the XMCP client username to exploit this vulnerability.

cisco CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-606

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
  • ios_xe

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
cisco
Products
iosios_xe

427 versions affected across 2 products

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-08-05: 1Technical Details · 2026-08-05: 108-05
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • Kaitan ID Security@KaitanSecurity
    Disclosure

    ⚠️ HIGH — CVE-2026-20301 Cisco IOS Software and IOS XE Software Extensible Messaging Client Protocol Denial of Service Vulnerability CVSS 8.6 Full analysis → https://sec.kaitan.id/cves/CVE-2026-20301 #Cisco #CyberSecurity #InfoSec

    Post summary

    The tweet announces a new high‑severity denial‑of‑service vulnerability in Cisco IOS, detailing affected software, protocol, and CVSS score.

    0000077
    88 followersView on X
CPE platform detail427 entries

427 of 427 entries

PartVendorProductVersionTarget SWTarget HW
OSciscoios15.2(7)e13--
OSciscoios15.2(8)e8--
OSciscoios15.2\(1\)sy6--
OSciscoios15.2\(1\)sy7--
OSciscoios15.2\(1\)sy8--
OSciscoios15.2\(2\)e10--
OSciscoios15.2\(2\)e10a--
OSciscoios15.2\(2\)e10b--
OSciscoios15.2\(2\)e10c--
OSciscoios15.2\(2\)e8--
OSciscoios15.2\(2\)e9--
OSciscoios15.2\(2\)e9a--
OSciscoios15.2\(4\)e10--
OSciscoios15.2\(4\)e10a--
OSciscoios15.2\(4\)e10b--
OSciscoios15.2\(4\)e10c--
OSciscoios15.2\(4\)e10d--
OSciscoios15.2\(4\)e10e--
OSciscoios15.2\(4\)e6--
OSciscoios15.2\(4\)e7--
OSciscoios15.2\(4\)e8--
OSciscoios15.2\(4\)e9--
OSciscoios15.2\(4\)ea7--
OSciscoios15.2\(4\)ea8--
OSciscoios15.2\(4\)ea9--
OSciscoios15.2\(4\)ea9a--
OSciscoios15.2\(6\)e1--
OSciscoios15.2\(6\)e1a--
OSciscoios15.2\(6\)e1s--
OSciscoios15.2\(6\)e2--
OSciscoios15.2\(6\)e2a--
OSciscoios15.2\(6\)e2b--
OSciscoios15.2\(6\)e3--
OSciscoios15.2\(7\)e--
OSciscoios15.2\(7\)e0a--
OSciscoios15.2\(7\)e0b--
OSciscoios15.2\(7\)e0s--
OSciscoios15.2\(7\)e1--
OSciscoios15.2\(7\)e10--
OSciscoios15.2\(7\)e11--
OSciscoios15.2\(7\)e12--
OSciscoios15.2\(7\)e14--
OSciscoios15.2\(7\)e1a--
OSciscoios15.2\(7\)e2--
OSciscoios15.2\(7\)e2b--
OSciscoios15.2\(7\)e3--
OSciscoios15.2\(7\)e3k--
OSciscoios15.2\(7\)e4--
OSciscoios15.2\(7\)e5--
OSciscoios15.2\(7\)e6--
OSciscoios15.2\(7\)e7--
OSciscoios15.2\(7\)e8--
OSciscoios15.2\(7\)e9--
OSciscoios15.2\(8\)e--
OSciscoios15.2\(8\)e1--
OSciscoios15.2\(8\)e2--
OSciscoios15.2\(8\)e3--
OSciscoios15.2\(8\)e4--
OSciscoios15.2\(8\)e5--
OSciscoios15.2\(8\)e6--
OSciscoios15.2\(8\)e7--
OSciscoios15.4\(1\)sy4--
OSciscoios15.5\(1\)sy1--
OSciscoios15.5\(1\)sy10--
OSciscoios15.5\(1\)sy11--
OSciscoios15.5\(1\)sy12--
OSciscoios15.5\(1\)sy13--
OSciscoios15.5\(1\)sy14--
OSciscoios15.5\(1\)sy15--
OSciscoios15.5\(1\)sy16--
OSciscoios15.5\(1\)sy17--
OSciscoios15.5\(1\)sy2--
OSciscoios15.5\(1\)sy3--
OSciscoios15.5\(1\)sy4--
OSciscoios15.5\(1\)sy5--
OSciscoios15.5\(1\)sy6--
OSciscoios15.5\(1\)sy7--
OSciscoios15.5\(1\)sy8--
OSciscoios15.5\(1\)sy9--
OSciscoios15.6\(2\)sp4--
OSciscoios15.6\(2\)sp5--
OSciscoios15.6\(2\)sp6--
OSciscoios15.6\(2\)sp7--
OSciscoios15.6\(2\)sp8--
OSciscoios15.6\(2\)sp8a--
OSciscoios15.6\(2\)sp9--
OSciscoios15.7\(3\)m10--
OSciscoios15.7\(3\)m10a--
OSciscoios15.7\(3\)m10b--
OSciscoios15.7\(3\)m2--
OSciscoios15.7\(3\)m3--
OSciscoios15.7\(3\)m4--
OSciscoios15.7\(3\)m4a--
OSciscoios15.7\(3\)m4b--
OSciscoios15.7\(3\)m5--
OSciscoios15.7\(3\)m6--
OSciscoios15.7\(3\)m7--
OSciscoios15.7\(3\)m8--
OSciscoios15.7\(3\)m9--
OSciscoios15.8\(3\)m--
OSciscoios15.8\(3\)m0a--
OSciscoios15.8\(3\)m0b--
OSciscoios15.8\(3\)m1--
OSciscoios15.8\(3\)m1a--
OSciscoios15.8\(3\)m2--
OSciscoios15.8\(3\)m2a--
OSciscoios15.8\(3\)m3--
OSciscoios15.8\(3\)m3a--
OSciscoios15.8\(3\)m3b--
OSciscoios15.8\(3\)m4--
OSciscoios15.8\(3\)m5--
OSciscoios15.8\(3\)m6--
OSciscoios15.8\(3\)m7--
OSciscoios15.8\(3\)m8--
OSciscoios15.8\(3\)m9--
OSciscoios15.9\(3\)m--
OSciscoios15.9\(3\)m0a--
OSciscoios15.9\(3\)m1--
OSciscoios15.9\(3\)m10--
OSciscoios15.9\(3\)m11--
OSciscoios15.9\(3\)m12--
OSciscoios15.9\(3\)m13--
OSciscoios15.9\(3\)m2--
OSciscoios15.9\(3\)m2a--
OSciscoios15.9\(3\)m3--
OSciscoios15.9\(3\)m3a--
OSciscoios15.9\(3\)m3b--
OSciscoios15.9\(3\)m4--
OSciscoios15.9\(3\)m4a--
OSciscoios15.9\(3\)m5--
OSciscoios15.9\(3\)m6--
OSciscoios15.9\(3\)m6a--
OSciscoios15.9\(3\)m6b--
OSciscoios15.9\(3\)m7--
OSciscoios15.9\(3\)m7a--
OSciscoios15.9\(3\)m8--
OSciscoios15.9\(3\)m8a--
OSciscoios15.9\(3\)m8b--
OSciscoios15.9\(3\)m9--
OSciscoios15.9\(3\)m9a--
OSciscoios_xe16.10.1--
OSciscoios_xe16.10.1a--
OSciscoios_xe16.10.1b--
OSciscoios_xe16.10.1c--
OSciscoios_xe16.10.1d--
OSciscoios_xe16.10.1e--
OSciscoios_xe16.10.1f--
OSciscoios_xe16.10.1g--
OSciscoios_xe16.10.1s--
OSciscoios_xe16.10.2--
OSciscoios_xe16.10.3--
OSciscoios_xe16.11.1--
OSciscoios_xe16.11.1a--
OSciscoios_xe16.11.1b--
OSciscoios_xe16.11.1c--
OSciscoios_xe16.11.1s--
OSciscoios_xe16.11.2--
OSciscoios_xe16.12.1--
OSciscoios_xe16.12.10--
OSciscoios_xe16.12.10a--
OSciscoios_xe16.12.11--
OSciscoios_xe16.12.12--
OSciscoios_xe16.12.13--
OSciscoios_xe16.12.14--
OSciscoios_xe16.12.15--
OSciscoios_xe16.12.16--
OSciscoios_xe16.12.1a--
OSciscoios_xe16.12.1c--
OSciscoios_xe16.12.1s--
OSciscoios_xe16.12.1t--
OSciscoios_xe16.12.1w--
OSciscoios_xe16.12.1x--
OSciscoios_xe16.12.1y--
OSciscoios_xe16.12.1z--
OSciscoios_xe16.12.1z1--
OSciscoios_xe16.12.1z2--
OSciscoios_xe16.12.2--
OSciscoios_xe16.12.2a--
OSciscoios_xe16.12.2s--
OSciscoios_xe16.12.2t--
OSciscoios_xe16.12.3--
OSciscoios_xe16.12.3a--
OSciscoios_xe16.12.3s--
OSciscoios_xe16.12.4--
OSciscoios_xe16.12.4a--
OSciscoios_xe16.12.5--
OSciscoios_xe16.12.5a--
OSciscoios_xe16.12.5b--
OSciscoios_xe16.12.6--
OSciscoios_xe16.12.6a--
OSciscoios_xe16.12.7--
OSciscoios_xe16.12.8--
OSciscoios_xe16.12.9--
OSciscoios_xe16.6.10--
OSciscoios_xe16.6.2--
OSciscoios_xe16.6.3--
OSciscoios_xe16.6.4--
OSciscoios_xe16.6.4a--
OSciscoios_xe16.6.4s--
OSciscoios_xe16.6.5--
OSciscoios_xe16.6.5a--
OSciscoios_xe16.6.5b--
OSciscoios_xe16.6.6--
OSciscoios_xe16.6.7--
OSciscoios_xe16.6.7a--
OSciscoios_xe16.6.8--
OSciscoios_xe16.6.9--
OSciscoios_xe16.7.1--
OSciscoios_xe16.7.1a--
OSciscoios_xe16.7.1b--
OSciscoios_xe16.7.2--
OSciscoios_xe16.7.3--
OSciscoios_xe16.7.4--
OSciscoios_xe16.8.1--
OSciscoios_xe16.8.1a--
OSciscoios_xe16.8.1b--
OSciscoios_xe16.8.1c--
OSciscoios_xe16.8.1d--
OSciscoios_xe16.8.1e--
OSciscoios_xe16.8.1s--
OSciscoios_xe16.8.2--
OSciscoios_xe16.8.3--
OSciscoios_xe16.9.1--
OSciscoios_xe16.9.1a--
OSciscoios_xe16.9.1b--
OSciscoios_xe16.9.1c--
OSciscoios_xe16.9.1d--
OSciscoios_xe16.9.1s--
OSciscoios_xe16.9.2--
OSciscoios_xe16.9.2a--
OSciscoios_xe16.9.2s--
OSciscoios_xe16.9.3--
OSciscoios_xe16.9.3a--
OSciscoios_xe16.9.3h--
OSciscoios_xe16.9.3s--
OSciscoios_xe16.9.4--
OSciscoios_xe16.9.4c--
OSciscoios_xe16.9.5--
OSciscoios_xe16.9.5f--
OSciscoios_xe16.9.6--
OSciscoios_xe16.9.7--
OSciscoios_xe16.9.8--
OSciscoios_xe16.9.8a--
OSciscoios_xe16.9.8b--
OSciscoios_xe17.1.1--
OSciscoios_xe17.1.1a--
OSciscoios_xe17.1.1s--
OSciscoios_xe17.1.1t--
OSciscoios_xe17.1.2--
OSciscoios_xe17.1.3--
OSciscoios_xe17.10.1--
OSciscoios_xe17.10.1a--
OSciscoios_xe17.10.1b--
OSciscoios_xe17.11.1--
OSciscoios_xe17.11.1a--
OSciscoios_xe17.12.1--
OSciscoios_xe17.12.1a--
OSciscoios_xe17.12.1w--
OSciscoios_xe17.12.1x--
OSciscoios_xe17.12.1y--
OSciscoios_xe17.12.1z--
OSciscoios_xe17.12.1z1--
OSciscoios_xe17.12.1z2--
OSciscoios_xe17.12.1z3--
OSciscoios_xe17.12.1z4--
OSciscoios_xe17.12.1z5--
OSciscoios_xe17.12.1z6--
OSciscoios_xe17.12.2--
OSciscoios_xe17.12.2a--
OSciscoios_xe17.12.3--
OSciscoios_xe17.12.3a--
OSciscoios_xe17.12.4--
OSciscoios_xe17.12.4a--
OSciscoios_xe17.12.4b--
OSciscoios_xe17.12.5--
OSciscoios_xe17.12.5a--
OSciscoios_xe17.12.5b--
OSciscoios_xe17.12.5c--
OSciscoios_xe17.12.5d--
OSciscoios_xe17.12.6--
OSciscoios_xe17.12.6a--
OSciscoios_xe17.12.6b--
OSciscoios_xe17.12.7--
OSciscoios_xe17.12.7a--
OSciscoios_xe17.12.7b--
OSciscoios_xe17.13.1--
OSciscoios_xe17.13.1a--
OSciscoios_xe17.14.1--
OSciscoios_xe17.14.1a--
OSciscoios_xe17.15.1--
OSciscoios_xe17.15.1a--
OSciscoios_xe17.15.1b--
OSciscoios_xe17.15.1w--
OSciscoios_xe17.15.1x--
OSciscoios_xe17.15.1y--
OSciscoios_xe17.15.2--
OSciscoios_xe17.15.2a--
OSciscoios_xe17.15.2b--
OSciscoios_xe17.15.2c--
OSciscoios_xe17.15.3--
OSciscoios_xe17.15.3a--
OSciscoios_xe17.15.3b--
OSciscoios_xe17.15.4--
OSciscoios_xe17.15.4a--
OSciscoios_xe17.15.4b--
OSciscoios_xe17.15.4c--
OSciscoios_xe17.15.4d--
OSciscoios_xe17.15.4s1--
OSciscoios_xe17.15.5--
OSciscoios_xe17.15.5a--
OSciscoios_xe17.16.1--
OSciscoios_xe17.16.1a--
OSciscoios_xe17.17.1--
OSciscoios_xe17.18.1--
OSciscoios_xe17.18.1a--
OSciscoios_xe17.18.1w--
OSciscoios_xe17.18.1x--
OSciscoios_xe17.18.1y--
OSciscoios_xe17.18.1z--
OSciscoios_xe17.18.2--
OSciscoios_xe17.18.3--
OSciscoios_xe17.18.3a--
OSciscoios_xe17.2.1--
OSciscoios_xe17.2.1a--
OSciscoios_xe17.2.1r--
OSciscoios_xe17.2.1v--
OSciscoios_xe17.2.2--
OSciscoios_xe17.2.3--
OSciscoios_xe17.3.1--
OSciscoios_xe17.3.1a--
OSciscoios_xe17.3.1w--
OSciscoios_xe17.3.1x--
OSciscoios_xe17.3.1z--
OSciscoios_xe17.3.2--
OSciscoios_xe17.3.2a--
OSciscoios_xe17.3.3--
OSciscoios_xe17.3.3a--
OSciscoios_xe17.3.4--
OSciscoios_xe17.3.4a--
OSciscoios_xe17.3.4b--
OSciscoios_xe17.3.4c--
OSciscoios_xe17.3.5--
OSciscoios_xe17.3.5a--
OSciscoios_xe17.3.5b--
OSciscoios_xe17.3.6--
OSciscoios_xe17.3.7--
OSciscoios_xe17.3.8--
OSciscoios_xe17.3.8a--
OSciscoios_xe17.4.1--
OSciscoios_xe17.4.1a--
OSciscoios_xe17.4.1b--
OSciscoios_xe17.4.1c--
OSciscoios_xe17.4.2--
OSciscoios_xe17.4.2a--
OSciscoios_xe17.5.1--
OSciscoios_xe17.5.1a--
OSciscoios_xe17.6.1--
OSciscoios_xe17.6.1a--
OSciscoios_xe17.6.1x--
OSciscoios_xe17.6.1z--
OSciscoios_xe17.6.1z1--
OSciscoios_xe17.6.2--
OSciscoios_xe17.6.3--
OSciscoios_xe17.6.3a--
OSciscoios_xe17.6.4--
OSciscoios_xe17.6.5--
OSciscoios_xe17.6.5a--
OSciscoios_xe17.6.6--
OSciscoios_xe17.6.6a--
OSciscoios_xe17.6.7--
OSciscoios_xe17.6.8--
OSciscoios_xe17.6.8a--
OSciscoios_xe17.7.1--
OSciscoios_xe17.7.1a--
OSciscoios_xe17.7.1b--
OSciscoios_xe17.7.2--
OSciscoios_xe17.8.1--
OSciscoios_xe17.8.1a--
OSciscoios_xe17.9.1--
OSciscoios_xe17.9.1a--
OSciscoios_xe17.9.1w--
OSciscoios_xe17.9.1x--
OSciscoios_xe17.9.1x1--
OSciscoios_xe17.9.1y--
OSciscoios_xe17.9.1y1--
OSciscoios_xe17.9.2--
OSciscoios_xe17.9.2a--
OSciscoios_xe17.9.3--
OSciscoios_xe17.9.3a--
OSciscoios_xe17.9.4--
OSciscoios_xe17.9.4a--
OSciscoios_xe17.9.5--
OSciscoios_xe17.9.5a--
OSciscoios_xe17.9.5b--
OSciscoios_xe17.9.5c--
OSciscoios_xe17.9.5d--
OSciscoios_xe17.9.5e--
OSciscoios_xe17.9.5f--
OSciscoios_xe17.9.6--
OSciscoios_xe17.9.6a--
OSciscoios_xe17.9.7--
OSciscoios_xe17.9.7a--
OSciscoios_xe17.9.7b--
OSciscoios_xe17.9.8--
OSciscoios_xe17.9.9--
OSciscoios_xe26.1.1--
OSciscoios_xe26.1.1a--
OSciscoios_xe26.2.1ea--
OSciscoios_xe3.11.10e--
OSciscoios_xe3.11.11e--
OSciscoios_xe3.11.12e--
OSciscoios_xe3.11.13e--
OSciscoios_xe3.11.14e--
OSciscoios_xe3.11.3ae--
OSciscoios_xe3.11.3e--
OSciscoios_xe3.11.4e--
OSciscoios_xe3.11.5e--
OSciscoios_xe3.11.6e--
OSciscoios_xe3.11.7e--
OSciscoios_xe3.11.8e--
OSciscoios_xe3.11.9e--
OSciscoios_xe3.16.10as--
OSciscoios_xe3.16.10bs--
OSciscoios_xe3.18.8asp--
OSciscoios_xe3.18.9sp--
OSciscoios_xe3.8.10ce--
OSciscoios_xe3.8.10de--

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