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%CVSS: 9.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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
9.8(medium)
EG Risk
52(Track)
EG Risk 52/100SSVC: 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%
Exploitation8% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
8%
EPSS %ILE
94%
KEV
Not listed

Published

March 15, 2019

Last Modified

November 21, 2024

Advisory Details (6)

Auto-updated Aug 19, 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 rangeFixed inDependents
rdesktop1.6.0-r0 ... 1.8.3-r5 (16 versions)1.8.6-r0—
Alpine:v3.11(1)
PackageVulnerable rangeFixed inDependents
rdesktop1.6.0-r0 ... 1.8.3-r5 (16 versions)1.8.6-r0—
Alpine:v3.12(1)
PackageVulnerable rangeFixed inDependents
rdesktop1.6.0-r0 ... 1.8.3-r5 (16 versions)1.8.6-r0—
Alpine:v3.13(1)
PackageVulnerable rangeFixed inDependents
rdesktop1.6.0-r0 ... 1.8.3-r5 (16 versions)1.8.6-r0—
Alpine:v3.14(1)
PackageVulnerable rangeFixed inDependents
rdesktop1.6.0-r0 ... 1.8.3-r5 (16 versions)1.8.6-r0—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
rdesktop—1.8.4-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
rdesktop—1.8.4-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
rdesktop—1.8.4-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
rdesktop—1.8.4-1—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
rdesktop1.8.2-3, 1.8.2-3+deb8u1, 1.8.3-1, 1.8.3-21.8.4-0+deb8u1—
Debian:9(1)
PackageVulnerable rangeFixed inDependents
rdesktop1.8.3-21.8.4-1~deb9u1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 29× 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 121 total refreshes for this CVE.

  1. 2026-08-20 22:51 UTCEPSS rescore
  2. 2026-08-19 17:00 UTCEPSS rescore
  3. 2026-08-18 13:44 UTCEPSS rescore
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  14. 2026-08-06 05:54 UTCOSV refresh
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  1. 2026-07-24 14:14 UTCEPSS rescore
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  3. 2026-07-23 01:35 UTCEG score recompute
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  5. 2026-07-22 14:05 UTCEPSS rescore
  6. 2026-07-21 15:22 UTCEPSS rescore
  7. 2026-07-20 20:02 UTCOSV refresh
  8. 2026-07-20 17:04 UTCEPSS rescore
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  21. 2026-07-12 05:43 UTCEPSS rescore
  22. 2026-07-11 08:24 UTCEPSS rescore
  23. 2026-07-09 19:06 UTCEPSS rescore
  24. 2026-07-08 15:11 UTCEPSS rescore
  25. 2026-07-07 13:42 UTCEPSS rescore
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  27. 2026-07-06 02:20 UTCEPSS rescore
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  31. 2026-07-03 15:56 UTCOSV refresh
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  64. 2026-06-15 05:13 UTCOSV refresh
  65. 2026-06-14 23:15 UTCEPSS rescore
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  67. 2026-06-13 22:58 UTCEPSS rescore
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  73. 2026-06-07 15:22 UTCEPSS rescore
  74. 2026-06-07 15:22 UTCEPSS rescore
  75. 2026-06-06 13:45 UTCEPSS rescore

Related CVEs(same CWE)

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 in the National Vulnerability Database 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% probability of exploitation in the next 30 days, which ranks it in the top 5.6% of all 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?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-20182, 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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