CVE-2018-15428

MEDIUMNVD 6.86.8—
EchelonGraph scoreMEDIUM confidence

Score 6.8 from GitHub Security Advisory published 2022-05-13. NVD baseline CVSS 6.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
6.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 2.0%CVSS: 6.8Exploit: None knownExposed services: Not assessed

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

A vulnerability in the implementation of Border Gateway Protocol (BGP) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to incorrect processing of certain BGP update messages. An attacker could exploit this vulnerability by sending BGP update messages that include a specific, malformed attribute to be processed by an affected system. A successful exploit could allow the attacker to cause the BGP process to restart unexpectedly, resulting in a DoS condition. The Cisco implementation of BGP accepts incoming BGP traffic only from explicitly defined peers. To exploit this vulnerability, the malicious BGP update message would need to come from a configured, valid BGP peer, or would need to be injected by the attacker into the victim's BGP network on an existing, valid TCP connection to a BGP peer.

CVSS v3
6.8
EG Score
6.8MEDIUMmedium confidence
EG Risk
31
EG Risk 31/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity68% × 45%
Exploitation2% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
2.0%
EPSS %ILE
79th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

October 5, 2018

Last Modified

November 21, 2024

References (4)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 25× 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 157 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2018-15428?
CVE-2018-15428 is a medium vulnerability published on October 5, 2018. A vulnerability in the implementation of Border Gateway Protocol (BGP) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to incorrect processing of certain BGP update messages. An attacker…
When was CVE-2018-15428 disclosed?
CVE-2018-15428 was first published on October 5, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-15428 actively exploited?
CVE-2018-15428 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.0% probability of exploitation in the next 30 days (79th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2018-15428?
CVE-2018-15428 has a CVSS v3 base score of 6.8 (NVD).
How do I remediate CVE-2018-15428?
No fix for CVE-2018-15428 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix.

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