CVE-2016-8276

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-17. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 6%CVSS: 9.8Exploit: NoneExposed: 0

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

Buffer overflow in the Point-to-Point Protocol over Ethernet (PPPoE) module in Huawei USG2100, USG2200, USG5100, and USG5500 unified security gateways with software before V300R001C10SPC600, when CHAP authentication is configured on the server, allows remote attackers to cause a denial of service (server restart) or execute arbitrary code via crafted packets sent during authentication.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
51(Track)
EG Risk 51/100SSVC: 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
Severity98% × 45%
Exploitation6% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
92.1%
KEV
Not listed

Published

October 3, 2016

Last Modified

May 6, 2026

Advisory Details (2)

Auto-updated May 9, 2026
No patch confirmed yet.
generic
http://www.securityfocus.com/bid/92962
generic

Security Advisory - Buffer Overflow Vulnerability in Huawei USG Products

http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20160914-01-usg-en

Data Freshness Timeline

(refreshed 14× in last 7d / 38× 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 103 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2016-8276?
CVE-2016-8276 is a critical vulnerability published on October 3, 2016. Buffer overflow in the Point-to-Point Protocol over Ethernet (PPPoE) module in Huawei USG2100, USG2200, USG5100, and USG5500 unified security gateways with software before V300R001C10SPC600, when CHAP authentication is configured on the server, allows remote attackers to cause a denial of service…
When was CVE-2016-8276 disclosed?
CVE-2016-8276 was first published in the National Vulnerability Database on October 3, 2016, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-8276 actively exploited?
CVE-2016-8276 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 92.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2016-8276?
CVE-2016-8276 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2016-8276?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-8276, 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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