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CVE-2017-6615

INDEX BUILT · 2026-09-20

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A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco IOS XE 3.16 could allow an authenticated, remote attacker to…

CVE-2017-66154 of 4 sources documented this
22

rank 22 = 0 + 16 + 0 + 6 + 0

rank@v1 · backlog

Someone is already using it

CISA KEV catalog · public proof-of-concept · FIRST EPSS

EPSS 0.01683  ·  without this subject the record ranks 22

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 6.3, from NVD  ·  without this subject the record ranks 6

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

no persisting rise in 365 days  ·  without this subject the record ranks 22

How much of the world it touches

NVD CPE configurations

5 products in the CPE ranges  ·  without this subject the record ranks 16

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 22

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$51,400over 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

$51,400 = $4.99M incident cost x 0.6121449559255632 exposure x 0.01683 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.

Hindsight · the state

0.01683EPSSNOT IN KEVas of 2026-09-20
Severity6.3 MEDIUMreceipt
Harmpartial impactreceipt
Exploitationnone in held sources
Defenseno fix version held
Movementrisenreceipt
PLATEAU10Minimal movement since 2021-04-14, 1971 days at 0.02, as of 2026-09-06. arc-rules@v1

Foresight · where to check next

Cisco IOSCisco IOS and IOS6615

This record is one instance of CWE-399. The index holds 2695 prior instances of this class, 11 KEV-listed. The nearest of its KEV-listed records are drawn beside this. taxonomy@v1

Full pattern panel

Prior records in this weakness class. Each is its own record, dated and receipted.
Color is a claim, not decoration:the hostile worldthe defenseno signalspoke length is how much of the record matches, not how bad it is

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Harm, if it fires from the vector and the weakness

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Reachnetwork-reachable · low privileges required · no user interaction · high attack complexityreceipt
ImpactComplete availability loss, with impact beyond the vulnerable componentreceipt
Scored fromCVSS v3.0 · NVD's vectorreceipt
Weakness classCWE-399receipt
Published consequencesMITRE publishes no common consequences for this weakness.[email protected]

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 6 Sep 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.

Exploit Status & Known PoCs a ladder, not a score

Current rung: Nothing observed in held sources.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published
  • RUNG 3Exploited in the wild · CISA KEV listed
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, NVD6.3 MEDIUMreceipt
Exploit probability0.01683 · top 24% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned byciscoreceipt
Recorded changes13 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productCisco IOS XE Softwarereceipt
Published rangescisco ios xe 3.16.0cs; cisco ios xe 3.16.0s; cisco ios xe 3.16.1as; cisco ios xe 3.16.1sreceipt
Show all 5 published ranges
cisco ios xe 3.16.0cs
cisco ios xe 3.16.0s
cisco ios xe 3.16.1as
cisco ios xe 3.16.1s
cisco ios xe 3.16.2s

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.

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What it is stated by the CNA

A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco IOS XE 3.16 could allow an authenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to a race condition that could occur when the affected software processes an SNMP read request that contains certain criteria for a specific object ID (OID) and an active crypto session is disconnected on an affected device. An attacker who can authenticate to an affected device could trigger this vulnerability by issuing an SNMP request for a specific OID on the device. A successful exploit will cause the device to restart due to an attempt to access an invalid memory region. receipt

Read the rest of the CNA's description

The attacker does not control how or when crypto sessions are disconnected on the device. Cisco Bug IDs: CSCvb94392.

NVD's analysis a second authority

severity
6.3 CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
weakness
CWE-399; CWE-125; CWE-362
affected versions
cisco ios xe 3.16.0cs; cisco ios xe 3.16.0s; cisco ios xe 3.16.1as; and 2 more, listed in full below

check it yourself securitytracker.com tools.cisco.com securityfocus.com receipt

Movement the material steps

14 Apr 20210.013
7 Mar 20230.00207 · scoring model v2023.03.01
17 Mar 20250.00355 · scoring model v2025.03.14
15 Jun 20260.01683 · scoring model v2026.06.15
6 Sep 20260.01683
Show all 13 observations
14 Apr 20210.013
4 Feb 20220.01061
7 Mar 20230.00207
17 Dec 20240.00143
17 Mar 20250.00355
19 Mar 20250.00448
29 Mar 20250.00455
30 Mar 20250.00448
15 Jun 20260.01683
23 Aug 20260.01617
30 Aug 20260.01683
5 Sep 20260.01617
6 Sep 20260.01683

13 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

EPSS 0.01683Published2017-04-20Index as of2026-09-06

The record had been public for 9 years, 4 months when this index was last written.

Published 2017-04-20 receipt · Index as of 2026-09-06 derived

The pattern, elsewhere

This record is one instance of CWE-399. The index holds 2695 prior instances of this class, 11 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2018-0161 · Cisco IOSmatches 9 of 10KEV listed · 2018receipt
CVE-2018-0179 · Cisco IOSmatches 7 of 10KEV listed · 2018receipt
CVE-2018-0180 · Cisco IOSmatches 7 of 10KEV listed · 2018receipt
CVE-2018-0154 · Cisco IOSmatches 6 of 10KEV listed · 2018receipt
CVE-2018-0156 · Cisco IOS and IOS XEmatches 6 of 10KEV listed · 2018receipt
CVE-2017-12231 · Cisco IOSmatches 6 of 10KEV listed · 2017receipt

"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

2695 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

Its defect family

cisco ios xe software

Grouped by shared product and weakness, not by shared vulnerability. Each record's own state is on its own page.

Family membership: computed, pro@dim2000

Nothing we hold separates this record from the others in its defect family. This page is kept and dated, and the defect family's own page is the one we offer for indexing: the whole group.

Browse the index from here

These are index-wide views, not findings about CVE-2017-6615.

What usually comes next

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