Security readout for executives and security teams
Plain-English summary
This is a serious Cisco network-device flaw in LLDP. An attacker on the same adjacent network segment could crash an affected device or potentially run code with elevated privileges. Because CISA KEV lists it as exploited, organizations should treat exposed affected devices as urgent remediation targets.
Executive priority
High priority. The issue affects core network infrastructure, has possible code execution impact, and is listed in CISA KEV. Prioritize remediation where affected devices support critical operations or have broad adjacent access.
Technical view
CVE-2018-0175 is a format string vulnerability in the LLDP subsystem of Cisco IOS, IOS XE, and IOS XR. The source states an unauthenticated adjacent attacker could cause denial of service or execute arbitrary code with elevated privileges. CVSS 3.1 score is 8.0.
Likely exposure
Exposure is most likely on Cisco IOS, IOS XE, or IOS XR devices with LLDP reachable from adjacent network access. Internet exposure is not implied by the provided vector, which is adjacent network.
Exploitation context
The source bundle marks this CVE as CISA KEV, supporting known exploitation. No cited source in the bundle provides campaign details, exploit maturity, or current exploitation volume.
Researcher notes
Evidence supports adjacent unauthenticated attack potential, DoS, possible elevated-code execution, and known exploitation via KEV. The bundle does not provide exploit details, fixed versions, or reliable current exploitation telemetry.
Mitigation direction
- Review Cisco advisory cisco-sa-20180328-lldp for affected releases and fixed software.
- Prioritize upgrades for Cisco IOS, IOS XE, and IOS XR devices running affected releases.
- Limit adjacent Layer 2 access to ports where LLDP is enabled.
- Check CISA KEV deadlines and internal remediation SLAs for required timelines.
Validation and detection
- Inventory Cisco IOS, IOS XE, and IOS XR devices and record running versions.
- Identify interfaces or segments where LLDP is enabled or reachable.
- Compare running software against Cisco advisory affected and fixed release guidance.
- Review network monitoring for unexpected LLDP-related crashes or instability.
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-2018-0175 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 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/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:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H2.15.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8HighVector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-lldpCVE reference · x_refsource_CONFIRM
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-03CVE reference · x_refsource_MISC
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04CVE reference · x_refsource_MISC
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05CVE reference · x_refsource_MISC
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0175CVE 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.