PLATEAUMinimal movement since 2021-04-14, 1929 days at 0.01, as of 2026-07-26. arc-rules@v1
Foresight · where to check next
This record is one instance of CWE-20, improper input validation. The index holds 13579 prior instances of this class, 75 KEV-listed. The nearest of its KEV-listed records are drawn beside this. taxonomy@v1
Both shown, dated. We don't pick winners. disagreement-rules@v1
Running Cisco IOS XR Software? Check your version
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Reachreachable from an adjacent network · no privileges required · no user interaction · low attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
Published consequencesCWE-20: Availability: DoS: Crash, Exit, or Restart, DoS: Resource Consumption (CPU), DoS: Resource Consumption (Memory); Confidentiality: Read Memory, Read Files or Directories…cwe-consequences@4.20
CISA KEV & Federal Remediation Deadline from the record and CISA
The fix, and how long it's been waiting.
Fixed inNo fix version in held sources, as the index stood on 26 Jul 2026.
Patch available sinceNo dated patch-availability record in held sources. The index holds reference URLs without dates and only the current revision of the CVE record, so the day a fix first existed cannot be derived. Only the versions it landed in.
BOD 26-04 deadlineIf the system is reachable from the internet: 14 days. If not: fix at the next system upgrade.derived
Show full BOD 26-04 deadline
CISA has not scored it, so the directive's own defaults apply: automatable no, technical impact total. Calendar days from the KEV listing or from when you find it on a system, whichever is first. Federal agencies are bound from 7 Dec 2026, and contracts often carry it to suppliers. The directive and its table
A rung lights from a row in the index, never from an assessment. "Held sources" is the true scope of the claim: this index reads the CVE record, NVD, CISA KEV, FIRST's EPSS and public proof-of-concept repositories, and it does not observe attacks.
Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$54,400over the next 30 days, if this record is yours
Movementno material movementthe record holds only daily drift and scoring model releases
Basisassumeda published average, not your estate
$54,400 = $4.99M incident cost x 1 exposure x 0.01091 likelihood
udv@v1 · unaudited · wrong for you until you say what you run
$4.99M is the cost of a breach that happened, from IBM Cost of a Data Breach Report 2026, global average. It is not the value of any asset of yours. That average already covers breaches of every severity, so scaling it by exposure understates a partial-impact record. That is an assumption, not a measurement. Your own asset value goes in the decision record.
Attack path
What it is stated by the CNA
A vulnerability in the Topology Discovery Service of Cisco One Platform Kit (onePK) in Cisco IOS Software, Cisco IOS XE Software, Cisco IOS XR Software, and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code or cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient length restrictions when the onePK Topology Discovery Service parses Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol message to an affected device. receipt
Read the rest of the CNA's description
An exploit could allow the attacker to cause a stack overflow, which could allow the attacker to execute arbitrary code with administrative privileges, or to cause a process crash, which could result in a reload of the device and cause a DoS condition.
NVD's analysis a second authority
severity
8.8 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
weakness
CWE-20
affected versions
cisco ios 12.2\(6\)i1; cisco ios 12.4\(25e\)jao7; cisco ios 15.0\(2\)sg11a; and 398 more, listed in full below
This score more than doubled inside 72 hours. Both observations are in the full history below.
Show all 20 observations
14 Apr 20210.00909
6 Jan 20220.03955
4 Feb 20220.02763
1 Apr 20220.01036
7 Mar 20230.00101
10 May 20230.00107
17 Dec 20240.00216
17 Mar 20250.00244
29 Mar 20250.00551
30 Mar 20250.00244
30 Jul 20250.00324
1 Oct 20250.00244
27 Oct 20250.00324
28 Oct 20250.00244
18 Nov 20250.00102
21 Nov 20250.00244
27 Dec 20250.00324
28 Dec 20250.00244
15 Jun 20260.01022
26 Jul 20260.01091
20 observations held. A highlighted step crossed a promotion threshold. A step marked with a scoring model moved because the instrument was replaced, not because the vulnerability changed. receipt
The full biography
Exploit probability more than doubled between 2025-11-18 and 2025-11-21 (0.00102 → 0.00244) and the record had been public for 6 years, 1 month when this index was last written.
Published 2020-06-03 receipt · Index as of 2026-07-26 derived
The pattern, elsewhere
This record is one instance of CWE-20, improper input validation. The index holds 13579 prior instances of this class, 75 KEV-listed. The nearest of its KEV-listed records are drawn beside this. cwe-consequences@4.20
CVE-2022-47966matches 7 of 8KEV listed · 2023receipt
CVE-2022-29499matches 7 of 8KEV listed · 2022receipt
CVE-2021-21985 · VMware vCenter Server and VMware Cloud…matches 7 of 9KEV listed · 2021receipt
CVE-2018-19949 · QNAP Systems Inc. QTSmatches 7 of 9KEV listed · 2020receipt
CVE-2019-0604 · Microsoft SharePoint Servermatches 7 of 9KEV listed · 2019receipt
CVE-2019-7193 · QNAP NAS devicesmatches 7 of 9KEV listed · 2019receipt
"Matches n of m" counts the attributes the two records can both be compared on: the CVSS metrics they share a version of, any weakness class beyond this one, and the vendor. fit-rules@v1
13579 records in this class held. The six above are drawn from the ones CISA has listed as exploited, ranked by how much of the record matches this one. That is why every one of them is KEV-listed: the pool is, so the colour on those spokes says nothing the pool has not already said.
No curated product neighbourhood is held for this product, so the records above are the nearest this index can name. The neighbourhood table covers a small set of products and is extended by hand.
Siblings and hubs
Records related to this one
No record cites this identifier and it carries no alias. Its defect family is below.
Its defect family
cisco ios xr software
Of the 16 records in this family, this is the only one whose title names nx-os one platform.
This record is one of a group, and the group's page describes all of them. This page is kept and dated, and the defect family's own page is the one we offer for indexing: the whole group.