CVE-2019-20795

MEDIUMNVD 4.44.4—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.4 under NVD CVSS v3. EPSS exploit probability: 0.4% (31st percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
4.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 4.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

iproute2 before 5.1.0 has a use-after-free in get_netnsid_from_name in ip/ipnetns.c. NOTE: security relevance may be limited to certain uses of setuid that, although not a default, are sometimes a configuration option offered to end users. Even when setuid is used, other factors (such as C library configuration) may block exploitability.

CVSS v3
4.4
EG Score
4.4MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100CISA 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
Severity44% × 45%
Exploitation0% × 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
0.4%
EPSS %ILE
32nd
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

May 9, 2020

Last Modified

November 21, 2024

References (8)

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuiproute2-doc (4.15.0-2ubuntu1.1) @ bionic2026-05-27ubuntu

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.

Affected Packages

(20 across 20 ecosystems)
Alpine:v3.10(1)
PackageVulnerable rangeFix by version rangeDependents
iproute2—
  • every version up to 4.20.0-r2: fixed in 4.20.0-r2
—
Alpine:v3.11(1)
PackageVulnerable rangeFix by version rangeDependents
iproute2—
  • every version up to 5.1.0-r0: fixed in 5.1.0-r0
—
Alpine:v3.12(1)
PackageVulnerable rangeFix by version rangeDependents
iproute2—
  • every version up to 5.1.0-r0: fixed in 5.1.0-r0
—
Alpine:v3.13(1)
PackageVulnerable rangeFix by version rangeDependents
iproute2—
  • every version up to 5.1.0-r0: fixed in 5.1.0-r0
—
Alpine:v3.14(1)
PackageVulnerable rangeFix by version rangeDependents
iproute2—
  • every version up to 5.1.0-r0: fixed in 5.1.0-r0
—
Alpine:v3.15(1)
PackageVulnerable rangeFix by version rangeDependents
iproute2—
  • every version up to 5.1.0-r0: fixed in 5.1.0-r0
—
Alpine:v3.16(1)
PackageVulnerable rangeFix by version rangeDependents
iproute2—
  • every version up to 5.1.0-r0: fixed in 5.1.0-r0
—
Alpine:v3.17(1)
PackageVulnerable rangeFix by version rangeDependents
iproute2—
  • every version up to 5.1.0-r0: fixed in 5.1.0-r0
—
Alpine:v3.18(1)
PackageVulnerable rangeFix by version rangeDependents
iproute2—
  • every version up to 5.1.0-r0: fixed in 5.1.0-r0
—
Alpine:v3.19(1)
PackageVulnerable rangeFix by version rangeDependents
iproute2—
  • every version up to 5.1.0-r0: fixed in 5.1.0-r0
—
Alpine:v3.20(1)
PackageVulnerable rangeFix by version rangeDependents
iproute2—
  • every version up to 5.1.0-r0: fixed in 5.1.0-r0
—
Alpine:v3.21(1)
PackageVulnerable rangeFix by version rangeDependents
iproute2—
  • every version up to 5.1.0-r0: fixed in 5.1.0-r0
—
Alpine:v3.22(1)
PackageVulnerable rangeFix by version rangeDependents
iproute2—
  • every version up to 5.1.0-r0: fixed in 5.1.0-r0
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
iproute2—
  • every version up to 5.1.0-r0: fixed in 5.1.0-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
iproute2—
  • every version up to 5.1.0-r0: fixed in 5.1.0-r0
—
Alpine:v3.9(1)
PackageVulnerable rangeFix by version rangeDependents
iproute2—
  • every version up to 4.19.0-r1: fixed in 4.19.0-r1
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
iproute2—
  • every version up to 5.2.0-1: fixed in 5.2.0-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
iproute2—
  • every version up to 5.2.0-1: fixed in 5.2.0-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
iproute2—
  • every version up to 5.2.0-1: fixed in 5.2.0-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
iproute2—
  • every version up to 5.2.0-1: fixed in 5.2.0-1
—

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 5× in last 7d / 27× 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 161 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 14:22 UTCEPSS rescore
  4. 2026-09-30 14:59 UTCEPSS rescore
  5. 2026-09-30 10:16 UTCEG score recompute
  6. 2026-09-28 13:46 UTCEPSS rescore
  7. 2026-09-27 13:40 UTCEPSS rescore
  8. 2026-09-27 03:45 UTCOSV refresh
  9. 2026-09-26 15:54 UTCEPSS rescore
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  11. 2026-09-26 00:20 UTCEPSS rescore
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  21. 2026-09-13 16:42 UTCEPSS rescore
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  24. 2026-09-11 09:32 UTCEPSS rescore
  25. 2026-09-07 15:57 UTCEPSS rescore
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  1. 2026-09-07 13:17 UTCOSV refresh
  2. 2026-09-06 13:44 UTCEPSS rescore
  3. 2026-09-05 15:24 UTCEPSS rescore
  4. 2026-09-04 13:56 UTCEPSS rescore
  5. 2026-09-02 14:07 UTCEPSS rescore
  6. 2026-09-01 03:32 UTCEPSS rescore
  7. 2026-08-30 19:13 UTCEPSS rescore
  8. 2026-08-30 01:18 UTCEPSS rescore
  9. 2026-08-28 21:36 UTCEPSS rescore
  10. 2026-08-27 14:21 UTCEPSS rescore
  11. 2026-08-26 14:42 UTCEPSS rescore
  12. 2026-08-25 13:45 UTCEPSS rescore
  13. 2026-08-24 14:11 UTCEPSS rescore
  14. 2026-08-21 23:45 UTCEPSS rescore
  15. 2026-08-20 22:51 UTCEPSS rescore
  16. 2026-08-20 22:31 UTCOSV refresh
  17. 2026-08-19 17:00 UTCEPSS rescore
  18. 2026-08-18 13:44 UTCEPSS rescore
  19. 2026-08-17 13:43 UTCEPSS rescore
  20. 2026-08-16 14:52 UTCEPSS rescore
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  22. 2026-08-15 01:26 UTCEPSS rescore
  23. 2026-08-12 13:47 UTCEPSS rescore
  24. 2026-08-09 13:43 UTCEPSS rescore
  25. 2026-08-08 16:33 UTCEPSS rescore
  26. 2026-08-07 16:23 UTCEPSS rescore
  27. 2026-08-06 13:43 UTCEPSS rescore
  28. 2026-08-05 19:13 UTCEPSS rescore
  29. 2026-08-05 14:10 UTCOSV refresh
  30. 2026-08-04 15:05 UTCEPSS rescore
  31. 2026-08-02 02:23 UTCEPSS rescore
  32. 2026-08-01 04:12 UTCEPSS rescore
  33. 2026-07-30 16:24 UTCEPSS rescore
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  35. 2026-07-28 15:32 UTCEPSS rescore
  36. 2026-07-26 14:51 UTCEPSS rescore
  37. 2026-07-25 14:14 UTCEPSS rescore
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  39. 2026-07-24 14:14 UTCEPSS rescore
  40. 2026-07-23 14:15 UTCEPSS rescore
  41. 2026-07-23 01:44 UTCEG score recompute
  42. 2026-07-22 22:24 UTCEG score recompute
  43. 2026-07-22 14:05 UTCEPSS rescore
  44. 2026-07-21 15:22 UTCEPSS rescore
  45. 2026-07-21 15:22 UTCEPSS rescore
  46. 2026-07-20 17:04 UTCEPSS rescore
  47. 2026-07-20 17:04 UTCEPSS rescore
  48. 2026-07-19 14:28 UTCEPSS rescore
  49. 2026-07-19 14:28 UTCEPSS rescore
  50. 2026-07-19 12:54 UTCOSV refresh
  51. 2026-07-19 02:26 UTCEPSS rescore
  52. 2026-07-19 02:26 UTCEPSS rescore
  53. 2026-07-18 10:01 UTCEPSS rescore
  54. 2026-07-16 16:59 UTCEPSS rescore
  55. 2026-07-16 16:59 UTCEPSS rescore
  56. 2026-07-15 16:55 UTCEPSS rescore
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  58. 2026-07-13 22:27 UTCEPSS rescore
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  63. 2026-07-11 08:24 UTCEPSS rescore
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  65. 2026-07-09 19:06 UTCEPSS rescore
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  67. 2026-07-07 13:43 UTCEPSS rescore
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  73. 2026-07-01 22:01 UTCOSV refresh
  74. 2026-07-01 15:03 UTCEPSS rescore
  75. 2026-07-01 15:03 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2019-20795?
CVE-2019-20795 is a medium vulnerability published on May 9, 2020. iproute2 before 5.1.0 has a use-after-free in getnetnsidfrom_name in ip/ipnetns.c. NOTE: security relevance may be limited to certain uses of setuid that, although not a default, are sometimes a configuration option offered to end users. Even when setuid is used, other factors (such as C library…
When was CVE-2019-20795 disclosed?
CVE-2019-20795 was first published on May 9, 2020, 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-2019-20795 actively exploited?
CVE-2019-20795 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (32nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2019-20795?
CVE-2019-20795 has a CVSS v3 base score of 4.4 (NVD).
How do I remediate CVE-2019-20795?
A fix for CVE-2019-20795 is available: update to the fixed version the vendor names in its advisory.

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