CVE-2017-6742 (GCVE-0-2017-6742)
Vulnerability from cvelistv5 – Published: 2017-07-17 21:00 – Updated: 2026-01-12 19:25Summary
A vulnerability in the SNMP implementation of could allow an authenticated, remote attacker to cause a reload of the affected system or to remotely execute code. An attacker could exploit this vulnerability by sending a crafted SNMP packet to the affected device.
The vulnerability is due to a buffer overflow in the affected code area. The vulnerability affects all versions of SNMP (versions 1, 2c, and 3). The attacker must know the SNMP read only community string (SNMP version 2c or earlier) or the user credentials (SNMPv3). An exploit could allow the attacker to execute arbitrary code and obtain full control of the system or to cause a reload of the affected system.
Only traffic directed to the affected system can be used to exploit this vulnerability.
Severity
8.8 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-11-08 17:35 UTC
CWE
- CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://sec.cloudapps.cisco.com/security/center/c… | |
| http://www.securityfocus.com/bid/99345 | vdb-entryx_refsource_BIDx_transferred |
| http://www.securitytracker.com/id/1038808 | vdb-entryx_refsource_SECTRACKx_transferred |
| https://tools.cisco.com/security/center/content/C… | x_refsource_CONFIRMx_transferred |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Cisco | Cisco IOS XE Software |
Affected:
3.7.0S
Affected: 3.7.1S Affected: 3.7.2S Affected: 3.7.3S Affected: 3.7.4S Affected: 3.7.5S Affected: 3.7.6S Affected: 3.7.7S Affected: 3.7.4aS Affected: 3.7.2tS Affected: 3.7.0bS Affected: 3.8.0S Affected: 3.8.1S Affected: 3.8.2S Affected: 3.9.1S Affected: 3.9.0S Affected: 3.9.2S Affected: 3.9.0aS Affected: 3.11.1S Affected: 3.11.2S Affected: 3.11.0S Affected: 3.11.3S Affected: 3.11.4S Affected: 3.12.0S Affected: 3.12.1S Affected: 3.12.2S Affected: 3.12.3S Affected: 3.12.0aS Affected: 3.12.4S Affected: 3.13.0S Affected: 3.13.1S Affected: 3.13.2S Affected: 3.13.3S Affected: 3.13.4S Affected: 3.13.5S Affected: 3.13.2aS Affected: 3.13.0aS Affected: 3.13.5aS Affected: 3.13.6S Affected: 3.13.7S Affected: 3.13.6aS Affected: 3.13.7aS Affected: 3.6.3E Affected: 3.6.6E Affected: 3.6.5bE Affected: 3.14.0S Affected: 3.14.1S Affected: 3.14.2S Affected: 3.14.3S Affected: 3.14.4S Affected: 3.15.0S Affected: 3.15.1S Affected: 3.15.2S Affected: 3.15.1cS Affected: 3.15.3S Affected: 3.15.4S Affected: 3.7.4E Affected: 3.7.5E Affected: 3.16.0S Affected: 3.16.1S Affected: 3.16.1aS Affected: 3.16.2S Affected: 3.16.0cS Affected: 3.16.3S Affected: 3.16.2bS Affected: 3.16.4aS Affected: 3.16.4bS Affected: 3.16.5S Affected: 3.16.4dS Affected: 3.17.0S Affected: 3.17.1S Affected: 3.17.2S Affected: 3.17.1aS Affected: 3.17.3S Affected: 16.2.1 Affected: 16.2.2 Affected: 16.3.1 Affected: 16.3.2 Affected: 16.3.3 Affected: 16.3.1a Affected: 16.3.4 Affected: 16.4.1 Affected: 16.4.2 Affected: 16.5.1 Affected: 16.5.1b Affected: 3.18.0aS Affected: 3.18.0S Affected: 3.18.1S Affected: 3.18.0SP Affected: 3.18.1SP Affected: 3.18.1aSP Affected: 3.18.2aSP |
guessed | |
| IntelliShield | Universal Product |
Affected:
N/A
|
guessed |
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 0f850047-4f0b-445c-ae55-b276040fcb59
Exploited: Yes
Timestamps
First Seen: 2023-04-19
Asserted: 2023-04-19
Scope
Notes: KEV entry: Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability | Affected: Cisco / IOS and IOS XE Software | Description: The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE contains a vulnerability that could allow an authenticated, remote attacker to remotely execute code on an affected system or cause an affected system to reload. | Required action: Apply updates per vendor instructions. | Due date: 2023-05-10 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp; https://nvd.nist.gov/vuln/detail/CVE-2017-6742
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-119 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | IOS and IOS XE Software |
| Due Date | 2023-05-10 |
| Date Added | 2023-04-19 |
| Vendorproject | Cisco |
| Vulnerabilityname | Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-02-02 12:27 UTC
| Updated: 2026-02-06 07:17 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 06c47d2c-c046-4137-8d7b-373bd558b621
Exploited: Yes
Timestamps
First Seen: 2023-04-19
Asserted: 2023-04-19
Scope
Notes: KEVIntel entry: A vulnerability in the SNMP implementation of could allow an authenticated, remote attacker to cause a reload of the affected system or to remotely... | Affected: Cisco, IntelliShield / Cisco IOS XE Software, Universal Product | CVSS: 8.8 (HIGH) | Used in malware: unknown | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | A vulnerability in the SNMP implementation of could allow an authenticated, remote attacker to cause a reload of the affected system or to remotely... |
| Vendor | Cisco, IntelliShield |
| Product | Cisco IOS XE Software, Universal Product |
| Added Date | 2023-04-19T00:00:00.000Z |
| Cvss Score | 8.8 |
| Epss Score | None |
| Cvss Severity | HIGH |
| Epss Percentile | None |
| Used In Malware | unknown |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | False |
References
Created: 2026-06-23 14:05 UTC
| Updated: 2026-07-10 06:14 UTC
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"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.0"
},
"format": "cvssV3_0"
}
],
"providerMetadata": {
"dateUpdated": "2025-07-31T16:24:06.252Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-20170629-snmp",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp"
}
],
"source": {
"advisory": "cisco-sa-20170629-snmp",
"defects": [
"CSCve54313"
],
"discovery": "UNKNOWN"
}
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2017-6742",
"datePublished": "2017-07-17T21:00:00.000Z",
"dateReserved": "2017-03-09T00:00:00.000Z",
"dateUpdated": "2026-01-12T19:25:59.489Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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