CVE-2019-0053

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-24. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

Insufficient validation of environment variables in the telnet client supplied in Junos OS can lead to stack-based buffer overflows, which can be exploited to bypass veriexec restrictions on Junos OS. A stack-based overflow is present in the handling of environment variables when connecting via the telnet client to remote telnet servers. This issue only affects the telnet client — accessible from the CLI or shell — in Junos OS. Inbound telnet services are not affected by this issue. This issue affects: Juniper Networks Junos OS: 12.3 versions prior to 12.3R12-S13; 12.3X48 versions prior to 12.3X48-D80; 14.1X53 versions prior to 14.1X53-D130, 14.1X53-D49; 15.1 versions prior to 15.1F6-S12, 15.1R7-S4; 15.1X49 versions prior to 15.1X49-D170; 15.1X53 versions prior to 15.1X53-D237, 15.1X53-D496, 15.1X53-D591, 15.1X53-D69; 16.1 versions prior to 16.1R3-S11, 16.1R7-S4; 16.2 versions prior to 16.2R2-S9; 17.1 versions prior to 17.1R3; 17.2 versions prior to 17.2R1-S8, 17.2R2-S7, 17.2R3-S1; 17.3 versions prior to 17.3R3-S4; 17.4 versions prior to 17.4R1-S6, 17.4R2-S3, 17.4R3; 18.1 versions prior to 18.1R2-S4, 18.1R3-S3; 18.2 versions prior to 18.2R1-S5, 18.2R2-S2, 18.2R3; 18.2X75 versions prior to 18.2X75-D40; 18.3 versions prior to 18.3R1-S3, 18.3R2; 18.4 versions prior to 18.4R1-S2, 18.4R2.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity78% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
47%
KEV
Not listed

Published

July 11, 2019

Last Modified

November 21, 2024

References (16)

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuinetutils-traceroute (2:1.9.4-1ubuntu0.1~esm3) @ xenial2026-05-27ubuntu

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

(5 across 5 ecosystems)
Debian:10(1)
PackageVulnerable rangeFixed inDependents
inetutils2:1.9.4-7, 2:1.9.4-7+deb10u1, 2:1.9.4-7+deb10u22:1.9.4-7+deb10u3—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
inetutils—2:1.9.4-11—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
inetutils—2:1.9.4-11—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
inetutils—2:1.9.4-11—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
inetutils—2:1.9.4-11—

Weakness Classification(2)

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 6× in last 7d / 24× 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 151 total refreshes for this CVE.

  1. 2026-09-19 15:36 UTCEPSS rescore
  2. 2026-09-18 19:22 UTCEPSS rescore
  3. 2026-09-17 19:22 UTCEPSS rescore
  4. 2026-09-15 03:05 UTCEPSS rescore
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  7. 2026-09-11 14:48 UTCEPSS rescore
  8. 2026-09-11 09:32 UTCEPSS rescore
  9. 2026-09-08 08:49 UTCOSV refresh
  10. 2026-09-06 13:44 UTCEPSS rescore
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  21. 2026-08-24 14:11 UTCEPSS rescore
  22. 2026-08-21 23:45 UTCEPSS rescore
  23. 2026-08-21 19:14 UTCOSV refresh
  24. 2026-08-20 22:51 UTCEPSS rescore
  25. 2026-08-19 17:00 UTCEPSS rescore
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  1. 2026-08-18 13:44 UTCEPSS rescore
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  6. 2026-08-13 21:56 UTCEPSS rescore
  7. 2026-08-12 13:47 UTCEPSS rescore
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  9. 2026-08-08 16:32 UTCEPSS rescore
  10. 2026-08-07 16:23 UTCEPSS rescore
  11. 2026-08-06 13:42 UTCEPSS rescore
  12. 2026-08-06 02:54 UTCOSV refresh
  13. 2026-08-04 15:05 UTCEPSS rescore
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  18. 2026-07-30 16:24 UTCEPSS rescore
  19. 2026-07-30 01:27 UTCEPSS rescore
  20. 2026-07-28 15:32 UTCEPSS rescore
  21. 2026-07-27 14:05 UTCEPSS rescore
  22. 2026-07-26 14:51 UTCEPSS rescore
  23. 2026-07-25 14:14 UTCEPSS rescore
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  27. 2026-07-23 14:15 UTCEPSS rescore
  28. 2026-07-23 14:15 UTCEPSS rescore
  29. 2026-07-23 01:38 UTCEG score recompute
  30. 2026-07-22 22:18 UTCEG score recompute
  31. 2026-07-22 14:05 UTCEPSS rescore
  32. 2026-07-21 15:22 UTCEPSS rescore
  33. 2026-07-20 17:04 UTCEPSS rescore
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  35. 2026-07-20 13:04 UTCOSV refresh
  36. 2026-07-19 14:28 UTCEPSS rescore
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  40. 2026-07-16 16:59 UTCEPSS rescore
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  42. 2026-07-15 16:55 UTCEPSS rescore
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  44. 2026-07-13 22:27 UTCEPSS rescore
  45. 2026-07-13 06:10 UTCEPSS rescore
  46. 2026-07-12 05:43 UTCEPSS rescore
  47. 2026-07-09 19:06 UTCEPSS rescore
  48. 2026-07-08 15:11 UTCEPSS rescore
  49. 2026-07-08 15:11 UTCEPSS rescore
  50. 2026-07-07 13:42 UTCEPSS rescore
  51. 2026-07-07 13:42 UTCEPSS rescore
  52. 2026-07-06 16:25 UTCEPSS rescore
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  54. 2026-07-06 02:20 UTCEPSS rescore
  55. 2026-07-05 02:27 UTCEPSS rescore
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  58. 2026-07-03 08:26 UTCOSV refresh
  59. 2026-07-01 15:03 UTCEPSS rescore
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  61. 2026-06-30 23:20 UTCEPSS rescore
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  65. 2026-06-28 04:53 UTCEPSS rescore
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  73. 2026-06-23 21:30 UTCEPSS rescore
  74. 2026-06-23 21:30 UTCEPSS rescore
  75. 2026-06-22 14:23 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2019-0053?
CVE-2019-0053 is a high vulnerability published on July 11, 2019. Insufficient validation of environment variables in the telnet client supplied in Junos OS can lead to stack-based buffer overflows, which can be exploited to bypass veriexec restrictions on Junos OS. A stack-based overflow is present in the handling of environment variables when connecting via the…
When was CVE-2019-0053 disclosed?
CVE-2019-0053 was first published in the National Vulnerability Database on July 11, 2019, 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-2019-0053 actively exploited?
CVE-2019-0053 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 53.3% of all scored CVEs.
What is the CVSS score of CVE-2019-0053?
CVE-2019-0053 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2019-0053?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-0053, 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.

Dependency Blast Radius

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