CVE-2016-2177

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this weekElevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 45%CVSS: 9.8Exploit: Elevated riskExposed: 0

A fix is available — apply it.

OpenSSL through 1.0.2h incorrectly uses pointer arithmetic for heap-buffer boundary checks, which might allow remote attackers to cause a denial of service (integer overflow and application crash) or possibly have unspecified other impact by leveraging unexpected malloc behavior, related to s3_srvr.c, ssl_sess.c, and t1_lib.c.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
66(Track*)
EG Risk 66/100SSVC: 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%
Exploitation45% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
45%
EPSS %ILE
99%
KEV
Not listed

Published

June 20, 2016

Last Modified

June 17, 2026

Advisory Details (1)

Auto-updated Jul 27, 2026
No patch confirmed yet.
generic

CEC Juniper Community

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759

Vendor Advisories for CVE-2016-2177(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(8)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuopenssl (1.0.1f-1ubuntu2.22) @ trusty2026-05-20ubuntu
ubuntuopenssl (1.0.2g-1ubuntu4.4) @ xenial2026-05-20ubuntu
redhatopenssl2017-06-28redhat
redhatjbcs-httpd24-openssl-1:1.0.2h-13.jbcs.el72017-06-28redhat
redhatjbcs-httpd24-openssl-1:1.0.2h-12.jbcs.el62017-01-25redhat
redhatjbcs-httpd24-openssl-1:1.0.2h-12.jbcs.el72017-01-25redhat
redhatpatch2016-12-15redhat
redhatopenssl-1:1.0.1e-51.el7_2.72016-09-27redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

Additional Vendor Advisories

(7)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 10× in last 7d / 30× 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.

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

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Frequently asked(5)

What is CVE-2016-2177?
CVE-2016-2177 is a critical vulnerability published on June 20, 2016. OpenSSL through 1.0.2h incorrectly uses pointer arithmetic for heap-buffer boundary checks, which might allow remote attackers to cause a denial of service (integer overflow and application crash) or possibly have unspecified other impact by leveraging unexpected malloc behavior, related to…
When was CVE-2016-2177 disclosed?
CVE-2016-2177 was first published in the National Vulnerability Database on June 20, 2016, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-2177 actively exploited?
CVE-2016-2177 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 45% probability of exploitation in the next 30 days, which ranks it in the top 1.4% of all scored CVEs.
What is the CVSS score of CVE-2016-2177?
CVE-2016-2177 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2016-2177?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-2177, 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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