CVE-2024-20327

HIGHNVD 7.47.4—
EchelonGraph scoreMEDIUM confidence

Score 7.4 from GitHub Security Advisory (severity: HIGH) published 2024-03-13. NVD baseline CVSS 7.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.4Exploit: None knownExposed: 0

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

A vulnerability in the PPP over Ethernet (PPPoE) termination feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, adjacent attacker to crash the ppp_ma process, resulting in a denial of service (DoS) condition. This vulnerability is due to the improper handling of malformed PPPoE packets that are received on a router that is running Broadband Network Gateway (BNG) functionality with PPPoE termination on a Lightspeed-based or Lightspeed-Plus-based line card. An attacker could exploit this vulnerability by sending a crafted PPPoE packet to an affected line card interface that does not terminate PPPoE. A successful exploit could allow the attacker to crash the ppp_ma process, resulting in a DoS condition for PPPoE traffic across the router.

CVSS v3
7.4
EG Score
7.4(medium)
EG Risk
33(Track)
EG Risk 33/100SSVC: Track

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
Severity74% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
26%
KEV
Not listed

Published

March 13, 2024

Last Modified

May 6, 2025

References (2)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 39× 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 121 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2024-20327?
CVE-2024-20327 is a high vulnerability published on March 13, 2024. A vulnerability in the PPP over Ethernet (PPPoE) termination feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, adjacent attacker to crash the ppp_ma process, resulting in a denial of service (DoS) condition. This vulnerability is…
When was CVE-2024-20327 disclosed?
CVE-2024-20327 was first published in the National Vulnerability Database on March 13, 2024, with the most recent update on May 6, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-20327 actively exploited?
CVE-2024-20327 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 73.8% of all scored CVEs.
What is the CVSS score of CVE-2024-20327?
CVE-2024-20327 has a CVSS v3 base score of 7.4 (NVD).
How do I remediate CVE-2024-20327?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-20327, 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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