CVE-2018-20182

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
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 8.2%CVSS: 9.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

rdesktop versions up to and including v1.8.3 contain a Buffer Overflow over the global variables in the function seamless_process_line() that results in memory corruption and probably even a remote code execution.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
52
EG Risk 52/100CISA 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
Severity98% × 45%
Exploitation8% × 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
8.2%
EPSS %ILE
94th
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 total (CVSS ≥ 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

March 15, 2019

Last Modified

November 21, 2024

Advisory Details (6)

Auto-updated Sep 28, 2026
Patch available. Sources: github_commit.
github_commit Patch Available

commit 4dca546d0432 (rdesktop/rdesktop)

Patch available: rdesktop/rdesktop v1.9.0-beta (contains commit 4dca546d0432)

https://github.com/rdesktop/rdesktop/commit/4dca546d04321a610c1835010b5dad85163b65e1
generic

CVE-2018-8784 - PSIRT.COM

http://www.securityfocus.com/bid/106938
generic

[SECURITY] [DSA 4394-1] rdesktop security update

https://www.debian.org/security/2019/dsa-4394
generic

rdesktop: Multiple vulnerabilities (GLSA 201903-06) — Gentoo security

https://security.gentoo.org/glsa/201903-06
generic

Reverse RDP Attack: Code Execution on RDP Clients - Check Point Research

https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/
generic Patch Available

[SECURITY] [DLA 1683-1] rdesktop security update

https://lists.debian.org/debian-lts-announce/2019/02/msg00030.html

Affected Packages

(11 across 11 ecosystems)
Alpine:v3.10(1)
PackageVulnerable rangeFix by version rangeDependents
rdesktop1.6.0-r0 ... 1.8.3-r5 (16 versions)
  • every version up to 1.8.6-r0: fixed in 1.8.6-r0
—
Alpine:v3.11(1)
PackageVulnerable rangeFix by version rangeDependents
rdesktop1.6.0-r0 ... 1.8.3-r5 (16 versions)
  • every version up to 1.8.6-r0: fixed in 1.8.6-r0
—
Alpine:v3.12(1)
PackageVulnerable rangeFix by version rangeDependents
rdesktop1.6.0-r0 ... 1.8.3-r5 (16 versions)
  • every version up to 1.8.6-r0: fixed in 1.8.6-r0
—
Alpine:v3.13(1)
PackageVulnerable rangeFix by version rangeDependents
rdesktop1.6.0-r0 ... 1.8.3-r5 (16 versions)
  • every version up to 1.8.6-r0: fixed in 1.8.6-r0
—
Alpine:v3.14(1)
PackageVulnerable rangeFix by version rangeDependents
rdesktop1.6.0-r0 ... 1.8.3-r5 (16 versions)
  • every version up to 1.8.6-r0: fixed in 1.8.6-r0
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
rdesktop—
  • every version up to 1.8.4-1: fixed in 1.8.4-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
rdesktop—
  • every version up to 1.8.4-1: fixed in 1.8.4-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
rdesktop—
  • every version up to 1.8.4-1: fixed in 1.8.4-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
rdesktop—
  • every version up to 1.8.4-1: fixed in 1.8.4-1
—
Debian:8(1)
PackageVulnerable rangeFix by version rangeDependents
rdesktop1.8.2-3, 1.8.2-3+deb8u1, 1.8.3-1, 1.8.3-2
  • every version up to 1.8.4-0+deb8u1: fixed in 1.8.4-0+deb8u1
—
Debian:9(1)
PackageVulnerable rangeFix by version rangeDependents
rdesktop1.8.3-2
  • every version up to 1.8.4-1~deb9u1: fixed in 1.8.4-1~deb9u1
—

Weakness Classification(1)

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

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 157 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 14:21 UTCEPSS rescore
  4. 2026-10-01 19:44 UTCEPSS rescore
  5. 2026-09-30 14:59 UTCEPSS rescore
  6. 2026-09-30 09:59 UTCEG score recompute
  7. 2026-09-28 13:45 UTCEPSS rescore
  8. 2026-09-28 11:38 UTCOSV refresh
  9. 2026-09-27 13:40 UTCEPSS rescore
  10. 2026-09-26 15:53 UTCEPSS rescore
  11. 2026-09-24 13:59 UTCEPSS rescore
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  20. 2026-09-11 14:47 UTCEPSS rescore
  21. 2026-09-11 09:32 UTCEPSS rescore
  22. 2026-09-08 15:34 UTCOSV refresh
  23. 2026-09-07 15:57 UTCEPSS rescore
  24. 2026-09-06 13:43 UTCEPSS rescore
  25. 2026-09-05 15:24 UTCEPSS rescore
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  1. 2026-09-04 13:56 UTCEPSS rescore
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  3. 2026-09-02 14:07 UTCEPSS rescore
  4. 2026-09-01 13:49 UTCEPSS rescore
  5. 2026-09-01 03:32 UTCEPSS rescore
  6. 2026-08-28 21:36 UTCEPSS rescore
  7. 2026-08-27 14:21 UTCEPSS rescore
  8. 2026-08-26 14:42 UTCEPSS rescore
  9. 2026-08-25 13:44 UTCEPSS rescore
  10. 2026-08-22 01:11 UTCOSV refresh
  11. 2026-08-21 23:45 UTCEPSS rescore
  12. 2026-08-20 22:51 UTCEPSS rescore
  13. 2026-08-19 17:00 UTCEPSS rescore
  14. 2026-08-18 13:44 UTCEPSS rescore
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  19. 2026-08-13 21:56 UTCEPSS rescore
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  21. 2026-08-09 13:43 UTCEPSS rescore
  22. 2026-08-08 16:32 UTCEPSS rescore
  23. 2026-08-07 16:23 UTCEPSS rescore
  24. 2026-08-06 13:42 UTCEPSS rescore
  25. 2026-08-06 05:54 UTCOSV refresh
  26. 2026-08-05 19:13 UTCEPSS rescore
  27. 2026-08-04 15:05 UTCEPSS rescore
  28. 2026-08-02 02:23 UTCEPSS rescore
  29. 2026-08-01 04:12 UTCEPSS rescore
  30. 2026-07-30 16:24 UTCEPSS rescore
  31. 2026-07-30 01:27 UTCEPSS rescore
  32. 2026-07-28 15:32 UTCEPSS rescore
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  35. 2026-07-25 14:14 UTCEPSS rescore
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  37. 2026-07-24 14:14 UTCEPSS rescore
  38. 2026-07-23 14:15 UTCEPSS rescore
  39. 2026-07-23 01:35 UTCEG score recompute
  40. 2026-07-22 22:15 UTCEG score recompute
  41. 2026-07-22 14:05 UTCEPSS rescore
  42. 2026-07-21 15:22 UTCEPSS rescore
  43. 2026-07-20 20:02 UTCOSV refresh
  44. 2026-07-20 17:04 UTCEPSS rescore
  45. 2026-07-20 17:04 UTCEPSS rescore
  46. 2026-07-19 14:28 UTCEPSS rescore
  47. 2026-07-19 02:26 UTCEPSS rescore
  48. 2026-07-19 02:26 UTCEPSS rescore
  49. 2026-07-16 16:59 UTCEPSS rescore
  50. 2026-07-16 16:59 UTCEPSS rescore
  51. 2026-07-15 16:55 UTCEPSS rescore
  52. 2026-07-15 16:55 UTCEPSS rescore
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  55. 2026-07-13 22:27 UTCEPSS rescore
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  57. 2026-07-12 05:43 UTCEPSS rescore
  58. 2026-07-11 08:24 UTCEPSS rescore
  59. 2026-07-09 19:06 UTCEPSS rescore
  60. 2026-07-08 15:11 UTCEPSS rescore
  61. 2026-07-07 13:42 UTCEPSS rescore
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  63. 2026-07-06 02:20 UTCEPSS rescore
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  65. 2026-07-04 06:28 UTCEPSS rescore
  66. 2026-07-04 06:28 UTCEPSS rescore
  67. 2026-07-03 15:56 UTCOSV refresh
  68. 2026-07-02 16:54 UTCEPSS rescore
  69. 2026-07-01 15:03 UTCEPSS rescore
  70. 2026-07-01 15:03 UTCEPSS rescore
  71. 2026-06-30 23:20 UTCEPSS rescore
  72. 2026-06-30 23:19 UTCEPSS rescore
  73. 2026-06-29 14:03 UTCEPSS rescore
  74. 2026-06-28 14:04 UTCEPSS rescore
  75. 2026-06-28 04:53 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2018-20182?
CVE-2018-20182 is a critical vulnerability published on March 15, 2019. rdesktop versions up to and including v1.8.3 contain a Buffer Overflow over the global variables in the function seamlessprocessline() that results in memory corruption and probably even a remote code execution.
When was CVE-2018-20182 disclosed?
CVE-2018-20182 was first published on March 15, 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-2018-20182 actively exploited?
CVE-2018-20182 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8.2% probability of exploitation in the next 30 days (94th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2018-20182?
CVE-2018-20182 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2018-20182?
A fix for CVE-2018-20182 is available: update to the fixed version the vendor names in its advisory.

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