CVE-2018-1000140

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
Trending — 3 sources updated this week
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 10%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

rsyslog librelp version 1.2.14 and earlier contains a Buffer Overflow vulnerability in the checking of x509 certificates from a peer that can result in Remote code execution. This attack appear to be exploitable a remote attacker that can connect to rsyslog and trigger a stack buffer overflow by sending a specially crafted x509 certificate.

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%
Exploitation10% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
95.0%
KEV
Not listed

Published

March 23, 2018

Last Modified

November 21, 2024

Advisory Details (9)

Auto-updated Jun 7, 2026
Patch available. Sources: redhat.
generic

librelp/src/tcp.c at 532aa362f0f7a8d037505b0a27a1df452f9bac9e · rsyslog/librelp · GitHub

https://github.com/rsyslog/librelp/blob/532aa362f0f7a8d037505b0a27a1df452f9bac9e/src/tcp.c#L1205
redhat Patch Available

Affected: Red Hat Enterprise Linux 7.3 Extended Update Support.

https://access.redhat.com/errata/RHSA-2018:1707
redhat Patch Available

Affected: Red Hat Enterprise Linux 7.4 Extended Update Support.

https://access.redhat.com/errata/RHSA-2018:1704
redhat Patch Available

Affected: Red Hat Enterprise Linux 7.2 Advanced Update Support, Red Hat Enterprise Linux 7.2 Telco Extended Update Support, and Red Hat

https://access.redhat.com/errata/RHSA-2018:1703
redhat Patch Available

Affected: Red Hat Enterprise Linux 6.7 Extended Update Support.

https://access.redhat.com/errata/RHSA-2018:1702
redhat Patch Available

Affected: Red Hat Enterprise Linux 6.6 Advanced Update Support and Red Hat Enterprise Linux 6.6 Telco Extended Update Support.

https://access.redhat.com/errata/RHSA-2018:1701
redhat Patch Available

Affected: Red Hat Enterprise Linux 6.

https://access.redhat.com/errata/RHSA-2018:1225
redhat Patch Available

Affected: Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2018:1223
generic

Packet Storm

http://packetstormsecurity.com/files/172829/librelp-Remote-Code-Execution.html

Patch Availability(9)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibrelp0 (1.2.2-2ubuntu1.1) @ trusty2026-05-28ubuntu
ubuntulibrelp-dev (1.2.9-1ubuntu0.1~esm1) @ xenial2026-05-28ubuntu
redhatlibrelp-0:1.2.7-3.el6_6.12018-05-23redhat
redhatlibrelp-0:1.2.7-3.el6_7.12018-05-23redhat
redhatlibrelp-0:1.2.0-4.el7_32018-05-23redhat
redhatlibrelp-0:1.2.12-1.el7_4.12018-05-23redhat
redhatlibrelp-0:1.2.0-4.el7_22018-05-23redhat
redhatlibrelp-0:1.2.12-1.el7_5.12018-04-24redhat
redhatlibrelp-0:1.2.7-3.el6_9.12018-04-24redhat

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.

Weakness Classification(1)

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

All Vendor Advisories

(9)

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 13× in last 7d / 48× 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.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2018-1000140?
CVE-2018-1000140 is a critical vulnerability published on March 23, 2018. rsyslog librelp version 1.2.14 and earlier contains a Buffer Overflow vulnerability in the checking of x509 certificates from a peer that can result in Remote code execution. This attack appear to be exploitable a remote attacker that can connect to rsyslog and trigger a stack buffer overflow by…
When was CVE-2018-1000140 disclosed?
CVE-2018-1000140 was first published in the National Vulnerability Database on March 23, 2018, 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-2018-1000140 actively exploited?
CVE-2018-1000140 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 95.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-1000140?
CVE-2018-1000140 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2018-1000140?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-1000140, 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.

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