Security readout for executives and security teams
Plain-English summary
CVE-2017-6744 can let someone with SNMP access take over affected Cisco IOS or IOS XE devices or force them to reload. Because CISA lists it in KEV, treat exposed, unremediated devices as urgent network-infrastructure risk.
Executive priority
Prioritize remediation for internet-facing or broadly reachable network devices first. This affects core infrastructure and is in CISA KEV, so delayed remediation may create takeover or outage risk.
Technical view
The issue is a buffer overflow in the Cisco IOS and IOS XE SNMP subsystem. Crafted SNMP packets over IPv4 or IPv6 can trigger remote code execution or denial of service when SNMP is enabled and affected MIBs or OIDs are not excluded.
Likely exposure
Exposure is most likely on Cisco IOS or IOS XE devices with SNMP enabled. SNMPv1/v2c requires knowledge of the read-only community string; SNMPv3 requires valid device credentials.
Exploitation context
CISA KEV status supports known exploitation. The Cisco description requires traffic directed at the affected system and authenticated SNMP access, but successful exploitation can provide full control or cause reloads.
Researcher notes
Do not assume all Cisco devices are affected; validate IOS or IOS XE version, SNMP state, credential exposure, and MIB/OID exclusions. The bundle does not provide exploit details beyond crafted SNMP packets.
Mitigation direction
- Use Cisco IOS Software Checker to identify fixed software for each device.
- Apply Cisco’s advisory workarounds where fixed software cannot be applied immediately.
- Restrict SNMP access to trusted management hosts only.
- Exclude affected MIBs or OIDs as directed by Cisco guidance.
- Audit and rotate exposed SNMP community strings or credentials.
Validation and detection
- Inventory Cisco IOS and IOS XE assets and software versions.
- Confirm whether SNMP is enabled on each device.
- Check whether affected MIBs or OIDs are explicitly excluded.
- Verify SNMP access is limited to approved management networks.
- Confirm remediation status against Cisco IOS Software Checker results.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-119: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2017-6744 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.0)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
8.8HighVector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- cisco-sa-20170629-snmpCVE reference
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-6744CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Restriction of Operations within the Bounds of a Memory Buffer
Improper Restriction of Operations within the Bounds of a Memory Buffer represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
