CVE-2016-1570

HIGHNVD 8.58.5—
EchelonGraph scoreMEDIUM confidence

Score 8.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-14. NVD baseline CVSS 8.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.2%CVSS: 8.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

The PV superpage functionality in arch/x86/mm.c in Xen 3.4.0, 3.4.1, and 4.1.x through 4.6.x allows local PV guests to obtain sensitive information, cause a denial of service, gain privileges, or have unspecified other impact via a crafted page identifier (MFN) to the (1) MMUEXT_MARK_SUPER or (2) MMUEXT_UNMARK_SUPER sub-op in the HYPERVISOR_mmuext_op hypercall or (3) unknown vectors related to page table updates.

CVSS v3
8.5
EG Score
8.5HIGHmedium confidence
EG Risk
43
EG Risk 43/100CISA 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
Severity85% × 45%
Exploitation1% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
1.2%
EPSS %ILE
65th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). 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

January 22, 2016

Last Modified

June 17, 2026

Advisory Details (3)

Auto-updated Sep 2, 2026
Patch available.
generic

XSA-167 - Xen Security Advisories

http://xenbits.xen.org/xsa/advisory-167.html
generic
http://www.securitytracker.com/id/1034744
generic

[SECURITY] [DSA 3519-1] xen security update

http://www.debian.org/security/2016/dsa-3519

Affected Packages

(6 across 6 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
xen—
  • every version up to 4.8.0~rc3-1: fixed in 4.8.0~rc3-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
xen—
  • every version up to 4.8.0~rc3-1: fixed in 4.8.0~rc3-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
xen—
  • every version up to 4.8.0~rc3-1: fixed in 4.8.0~rc3-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
xen—
  • every version up to 4.8.0~rc3-1: fixed in 4.8.0~rc3-1
—
Debian:7(1)
PackageVulnerable rangeFix by version rangeDependents
xen4.1.4-3 ... 4.1.4-4 (11 versions)
  • every version up to 4.1.6.1-1+deb7u1: fixed in 4.1.6.1-1+deb7u1
—
Debian:8(1)
PackageVulnerable rangeFix by version rangeDependents
xen4.4.1-9, 4.4.1-9+deb8u1, 4.4.1-9+deb8u2, 4.4.1-9+deb8u3
  • every version up to 4.4.1-9+deb8u4: fixed in 4.4.1-9+deb8u4
—

Weakness Classification(1)

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

Data Freshness Timeline

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

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Frequently asked(5)

What is CVE-2016-1570?
CVE-2016-1570 is a high vulnerability published on January 22, 2016. The PV superpage functionality in arch/x86/mm.c in Xen 3.4.0, 3.4.1, and 4.1.x through 4.6.x allows local PV guests to obtain sensitive information, cause a denial of service, gain privileges, or have unspecified other impact via a crafted page identifier (MFN) to the (1) MMUEXTMARKSUPER or (2)…
When was CVE-2016-1570 disclosed?
CVE-2016-1570 was first published on January 22, 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-2016-1570 actively exploited?
CVE-2016-1570 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.2% probability of exploitation in the next 30 days (65th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2016-1570?
CVE-2016-1570 has a CVSS v3 base score of 8.5 (NVD).
How do I remediate CVE-2016-1570?
A fix for CVE-2016-1570 is available: update to the fixed version the vendor names in its advisory.

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