CVE-2017-6742 — CVE & Security Advisory Radar

🎯 CVE-2017-6742 HIGH 8.8 🔥 EPSS 21.4% ⚠️ CISA KEV · 1238 T 🔓 Exploited 🇪🇺 EUVD

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CVE-2017-6742 | 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

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.

Klassifikation & Betroffenheit:

IntelliShieldCisco Cisco IOS XE Software 3.12.3SCisco IOS XE Software 3.13.3SCisco IOS XE Software 3.7.6SCisco IOS XE Software 3.6.3ECisco IOS XE Software 3.13.5SCisco IOS XE Software 3.13.4SCisco IOS XE Software 3.13.0aSCisco IOS XE Software 3.17.1aS

Improper Restriction of Operations within the Bounds of a Memory Buffer 🎯 High

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

🛡️ Empfohlene Mitigation: Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. For example, many languages that perform their own memory management, such as Java and Perl, are not subject to buffer overflows. Other languages, such as Ada and C#, typically provide overflow prot…

Vollständige Definition bei MITRE ➔

⚔️ Typische Angriffsmuster (CAPEC):

CAPEC-10 · Buffer Overflow via Environment Variable… (High) CAPEC-14 · Client-side Injection-induced Buffer Ove… (High) CAPEC-24 · Filter Failure through Buffer Overflow (High) CAPEC-42 · MIME Conversion (High) CAPEC-44 · Overflow Binary Resource File (Very High) CAPEC-45 · Buffer Overflow via Symbolic Links (High) CAPEC-100 · Overflow Buffers (Very High) CAPEC-123 · Buffer Manipulation (Very High)

🧩 Ähnliche Schwachstellen (Hersteller/Klasse/Score-Band):

CVE-2017-6736 8.8 CVE-2017-6740 8.8 CVE-2017-6739 8.8 CVE-2017-6743 8.8

🧪 Exploit-Evidenz:

🐙 sastraadiwiguna-purpleeliteteami

📚 Referenzen & Quellen:

🇪🇺 Original-Eintrag (ENISA EUVD) 🇺🇸 NVD-Eintrag

Ausnutzungs-Zeitleiste:

Reserviert 2017

Veröffentlicht 07/2017

Im KEV seit 04/2023

Heute 08.09.

CVSS-Vektor-Analyse: 8.8

AV · Angriffsvektor Netzwerk

AC · Komplexität Gering

PR · Privilegien Gering

UI · Interaktion Keine

S · Scope Unverändert

C · Vertraulichkeit Hoch

I · Integrität Hoch

A · Verfügbarkeit Hoch

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Veröffentlicht:17.07.2017

Aktualisiert:17.06.2026 01:22

Assigner (CNA):cisco

EUVD-ID:EUVD-2017-15796

Quellen: 🇪🇺 EUVD-Datenbank (ENISA) + 🇺🇸 NVD-Anreicherung · 24-h-Cache

CWE-119: Memory Corruption ✓ Offizieller Patch / Advisory verfügbar

💡 Gegenmaßnahme: Sicherheits-Update des Herstellers zeitnah einspielen und Netzwerksegmentierung prüfen.

Tier	2026-08-29	2026-09-06
≥90 %	4	0
≥50 %	4	0
≥10 %	3	0
<10 %	304	300

8.8 HIGH

🇪🇺 EUVD ⚠️ KEV

EPSS

21.4%

CVE-2017-6742 🌐 Netzwerk (Remote) 🔑 Geringe Nutzerrechte nötig

🔓 IntelliShield

CVE-2017-6742 | 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

CWE-119: Memory Corruption ✓ Offizieller Patch / Advisory verfügbar

💡 Gegenmaßnahme: Sicherheits-Update des Herstellers zeitnah einspielen und Netzwerksegmentierung prüfen.

17.07.2017

🛡️ Details ➔

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