CVE-2018-0175

HIGHNVD 8.09.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-03-03), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.0 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
8.0
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 4%CVSS: 8.0Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Format String vulnerability in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges on an affected device. Cisco Bug IDs: CSCvd73664.

CVSS v3
8.0
EG Score
9.0(high)
EPSS
87.9%
KEV
⚠ Exploited

Published

March 28, 2018

Last Modified

January 14, 2026

Advisory Details (3)

Auto-updated Jun 3, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic
http://www.securitytracker.com/id/1040586
generic
http://www.securityfocus.com/bid/103564
generic🔴 Active Exploitation

Cisco IOS, IOS XE, and IOS XR Software Link Layer Discovery Protocol Buffer Overflow Vulnerabilities

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-lldp

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 94× in last 7d / 417× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 597 total refreshes for this CVE.

  1. 2026-07-11 23:44 UTCEG score recompute
  2. 2026-07-11 23:44 UTCGHSA enrichment
  3. 2026-07-11 19:49 UTCEG score recompute
  4. 2026-07-11 19:49 UTCGHSA enrichment
  5. 2026-07-11 15:54 UTCEG score recompute
  6. 2026-07-11 15:54 UTCGHSA enrichment
  7. 2026-07-11 11:59 UTCEG score recompute
  8. 2026-07-11 11:59 UTCGHSA enrichment
  9. 2026-07-11 08:24 UTCEPSS rescore
  10. 2026-07-11 08:04 UTCEG score recompute
  11. 2026-07-11 08:03 UTCGHSA enrichment
  12. 2026-07-11 04:09 UTCEG score recompute
  13. 2026-07-11 04:08 UTCGHSA enrichment
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  15. 2026-07-11 00:12 UTCGHSA enrichment
  16. 2026-07-10 20:14 UTCEG score recompute
  17. 2026-07-10 20:14 UTCGHSA enrichment
  18. 2026-07-10 17:52 UTCCISA KEV update
  19. 2026-07-10 16:18 UTCEG score recompute
  20. 2026-07-10 16:18 UTCGHSA enrichment
  21. 2026-07-10 12:22 UTCEG score recompute
  22. 2026-07-10 12:22 UTCGHSA enrichment
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  24. 2026-07-10 08:26 UTCGHSA enrichment
  25. 2026-07-10 04:31 UTCEG score recompute
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  1. 2026-07-10 04:31 UTCGHSA enrichment
  2. 2026-07-10 00:33 UTCEG score recompute
  3. 2026-07-10 00:33 UTCGHSA enrichment
  4. 2026-07-09 20:36 UTCEG score recompute
  5. 2026-07-09 20:36 UTCGHSA enrichment
  6. 2026-07-09 19:06 UTCEPSS rescore
  7. 2026-07-09 16:40 UTCEG score recompute
  8. 2026-07-09 16:40 UTCGHSA enrichment
  9. 2026-07-09 12:45 UTCEG score recompute
  10. 2026-07-09 12:45 UTCGHSA enrichment
  11. 2026-07-09 08:49 UTCEG score recompute
  12. 2026-07-09 08:49 UTCGHSA enrichment
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  14. 2026-07-09 04:54 UTCGHSA enrichment
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  16. 2026-07-09 00:59 UTCGHSA enrichment
  17. 2026-07-08 21:04 UTCEG score recompute
  18. 2026-07-08 21:03 UTCGHSA enrichment
  19. 2026-07-08 17:08 UTCEG score recompute
  20. 2026-07-08 17:08 UTCGHSA enrichment
  21. 2026-07-08 15:11 UTCEPSS rescore
  22. 2026-07-08 13:13 UTCEG score recompute
  23. 2026-07-08 13:13 UTCGHSA enrichment
  24. 2026-07-08 09:17 UTCEG score recompute
  25. 2026-07-08 09:17 UTCGHSA enrichment
  26. 2026-07-08 05:22 UTCEG score recompute
  27. 2026-07-08 05:22 UTCGHSA enrichment
  28. 2026-07-08 01:26 UTCEG score recompute
  29. 2026-07-08 01:26 UTCGHSA enrichment
  30. 2026-07-07 21:32 UTCEG score recompute
  31. 2026-07-07 21:32 UTCGHSA enrichment
  32. 2026-07-07 19:01 UTCCISA KEV update
  33. 2026-07-07 17:36 UTCEG score recompute
  34. 2026-07-07 17:36 UTCGHSA enrichment
  35. 2026-07-07 17:16 UTCCISA KEV update
  36. 2026-07-07 13:40 UTCEG score recompute
  37. 2026-07-07 13:40 UTCGHSA enrichment
  38. 2026-07-07 09:45 UTCEG score recompute
  39. 2026-07-07 09:45 UTCGHSA enrichment
  40. 2026-07-07 05:49 UTCEG score recompute
  41. 2026-07-07 05:49 UTCGHSA enrichment
  42. 2026-07-07 01:52 UTCEG score recompute
  43. 2026-07-07 01:51 UTCGHSA enrichment
  44. 2026-07-06 21:55 UTCEG score recompute
  45. 2026-07-06 21:55 UTCGHSA enrichment
  46. 2026-07-06 18:00 UTCEG score recompute
  47. 2026-07-06 18:00 UTCGHSA enrichment
  48. 2026-07-06 16:24 UTCEPSS rescore
  49. 2026-07-06 16:24 UTCEPSS rescore
  50. 2026-07-06 14:03 UTCEG score recompute
  51. 2026-07-06 14:03 UTCGHSA enrichment
  52. 2026-07-06 10:06 UTCEG score recompute
  53. 2026-07-06 10:06 UTCGHSA enrichment
  54. 2026-07-06 06:09 UTCEG score recompute
  55. 2026-07-06 06:09 UTCGHSA enrichment
  56. 2026-07-06 02:20 UTCEPSS rescore
  57. 2026-07-06 02:20 UTCEPSS rescore
  58. 2026-07-06 02:13 UTCEG score recompute
  59. 2026-07-06 02:13 UTCGHSA enrichment
  60. 2026-07-05 22:18 UTCEG score recompute
  61. 2026-07-05 22:18 UTCGHSA enrichment
  62. 2026-07-05 18:23 UTCEG score recompute
  63. 2026-07-05 18:23 UTCGHSA enrichment
  64. 2026-07-05 14:28 UTCEG score recompute
  65. 2026-07-05 14:28 UTCGHSA enrichment
  66. 2026-07-05 10:33 UTCEG score recompute
  67. 2026-07-05 10:32 UTCGHSA enrichment
  68. 2026-07-05 06:37 UTCEG score recompute
  69. 2026-07-05 06:37 UTCGHSA enrichment
  70. 2026-07-05 02:40 UTCEG score recompute
  71. 2026-07-05 02:39 UTCGHSA enrichment
  72. 2026-07-05 02:27 UTCEPSS rescore
  73. 2026-07-04 22:44 UTCEG score recompute
  74. 2026-07-04 22:44 UTCGHSA enrichment
  75. 2026-07-04 18:49 UTCEG score recompute

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Frequently asked(6)

What is CVE-2018-0175?
CVE-2018-0175 is a high vulnerability published on March 28, 2018. Format String vulnerability in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges…
When was CVE-2018-0175 disclosed?
CVE-2018-0175 was first published in the National Vulnerability Database on March 28, 2018, with the most recent update on January 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-0175 actively exploited?
Yes. CISA added CVE-2018-0175 to the Known Exploited Vulnerabilities catalog on March 3, 2022, affecting Cisco IOS, XR, and XE Software. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2018-0175?
CVE-2018-0175 has a CVSS v3 base score of 8.0 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2018-0175?
CVE-2018-0175 affects Cisco IOS, XR, and XE Software. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2018-0175?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-0175, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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