CVE-2019-17041

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 1.8%, top 17% of all CVEs by exploit prediction. 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
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 5%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

An issue was discovered in Rsyslog v8.1908.0. contrib/pmaixforwardedfrom/pmaixforwardedfrom.c has a heap overflow in the parser for AIX log messages. The parser tries to locate a log message delimiter (in this case, a space or a colon) but fails to account for strings that do not satisfy this constraint. If the string does not match, then the variable lenMsg will reach the value zero and will skip the sanity check that detects invalid log messages. The message will then be considered valid, and the parser will eat up the nonexistent colon delimiter. In doing so, it will decrement lenMsg, a signed integer, whose value was zero and now becomes minus one. The following step in the parser is to shift left the contents of the message. To do this, it will call memmove with the right pointers to the target and destination strings, but the lenMsg will now be interpreted as a huge value, causing a heap overflow.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
90.5%
KEV
Not listed

Published

October 7, 2019

Last Modified

November 21, 2024

Advisory Details (5)

Auto-updated Jun 19, 2026
Patch available. Sources: github_pr.
generic

rsyslog/ChangeLog at v8-stable · rsyslog/rsyslog · GitHub

https://github.com/rsyslog/rsyslog/blob/v8-stable/ChangeLog
generic

[SECURITY] Fedora 31 Update: rsyslog-8.1911.0-1.fc31 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W6SUQE25RD37CD24BHKUWMG27U5RQ2FU/
generic

[SECURITY] Fedora 30 Update: rsyslog-8.1911.0-1.fc30 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KPNCHI7X2IEXRH6RYD6IDPR4PLB5RPC7/
generic Patch Available

[SECURITY] [DLA 2835-1] rsyslog security update

https://lists.debian.org/debian-lts-announce/2021/11/msg00030.html
github_pr Patch Available

pmaixforwardedfrom bugfix: potential misadressing

Patch available: rsyslog/rsyslog v8.2604.0 (PR #3884 merged 2019-09-30)

https://github.com/rsyslog/rsyslog/pull/3884

Vendor Advisories for CVE-2019-17041(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntursyslog-gnutls (8.16.0-1ubuntu3.1+esm1) @ xenial2026-05-27ubuntu
redhatrsyslog-0:8.1911.0-3.el82020-04-28redhat
redhatansible-tower-36/ansible-tower:3.6.4-12020-04-22redhat
redhatansible-tower-35/ansible-tower:3.5.6-12020-04-22redhat
redhatrsyslog-0:8.24.0-52.el72020-03-31redhat

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(3)

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

Additional Vendor Advisories

(3)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 11× in last 7d / 43× 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. 2026-07-13 06:10 UTCEPSS rescore
  2. 2026-07-13 06:10 UTCEPSS rescore
  3. 2026-07-12 05:43 UTCEPSS rescore
  4. 2026-07-12 05:43 UTCEPSS rescore
  5. 2026-07-11 08:24 UTCEPSS rescore
  6. 2026-07-11 08:24 UTCEPSS rescore
  7. 2026-07-09 19:06 UTCEPSS rescore
  8. 2026-07-08 15:11 UTCEPSS rescore
  9. 2026-07-07 13:43 UTCEPSS rescore
  10. 2026-07-06 16:25 UTCEPSS rescore
  11. 2026-07-06 16:25 UTCEPSS rescore
  12. 2026-07-06 02:20 UTCEPSS rescore
  13. 2026-07-05 02:27 UTCEPSS rescore
  14. 2026-07-04 06:28 UTCEPSS rescore
  15. 2026-07-02 19:35 UTCOSV refresh
  16. 2026-07-01 15:03 UTCEPSS rescore
  17. 2026-07-01 15:03 UTCEPSS rescore
  18. 2026-06-30 23:20 UTCEPSS rescore
  19. 2026-06-29 14:03 UTCEPSS rescore
  20. 2026-06-28 04:54 UTCEPSS rescore
  21. 2026-06-28 04:54 UTCEPSS rescore
  22. 2026-06-27 03:06 UTCEPSS rescore
  23. 2026-06-25 13:47 UTCEPSS rescore
  24. 2026-06-25 13:47 UTCEPSS rescore
  25. 2026-06-24 14:03 UTCEPSS rescore
Show 53 more
  1. 2026-06-24 14:03 UTCEPSS rescore
  2. 2026-06-23 21:31 UTCEPSS rescore
  3. 2026-06-23 21:30 UTCEPSS rescore
  4. 2026-06-22 14:23 UTCEPSS rescore
  5. 2026-06-21 14:54 UTCEPSS rescore
  6. 2026-06-21 14:54 UTCEPSS rescore
  7. 2026-06-21 01:57 UTCEPSS rescore
  8. 2026-06-21 01:57 UTCEPSS rescore
  9. 2026-06-19 19:23 UTCEPSS rescore
  10. 2026-06-19 19:23 UTCEPSS rescore
  11. 2026-06-18 17:50 UTCEPSS rescore
  12. 2026-06-17 17:50 UTCEPSS rescore
  13. 2026-06-16 17:50 UTCEPSS rescore
  14. 2026-06-15 17:45 UTCEPSS rescore
  15. 2026-06-14 23:15 UTCEPSS rescore
  16. 2026-06-14 23:15 UTCEPSS rescore
  17. 2026-06-14 17:13 UTCOSV refresh
  18. 2026-06-13 22:58 UTCEPSS rescore
  19. 2026-06-12 23:09 UTCEPSS rescore
  20. 2026-06-11 13:58 UTCEPSS rescore
  21. 2026-06-10 22:16 UTCEPSS rescore
  22. 2026-06-10 13:19 UTCEPSS rescore
  23. 2026-06-08 14:15 UTCEPSS rescore
  24. 2026-06-07 15:23 UTCEPSS rescore
  25. 2026-06-07 15:23 UTCEPSS rescore
  26. 2026-06-06 13:45 UTCEPSS rescore
  27. 2026-06-06 13:45 UTCEPSS rescore
  28. 2026-06-05 22:45 UTCEPSS rescore
  29. 2026-06-05 22:45 UTCEPSS rescore
  30. 2026-06-05 06:08 UTCEPSS rescore
  31. 2026-06-05 06:08 UTCEPSS rescore
  32. 2026-06-04 13:10 UTCEPSS rescore
  33. 2026-06-04 13:10 UTCEPSS rescore
  34. 2026-06-02 20:11 UTCEPSS rescore
  35. 2026-06-02 20:11 UTCEPSS rescore
  36. 2026-06-01 13:50 UTCEPSS rescore
  37. 2026-06-01 13:50 UTCEPSS rescore
  38. 2026-05-31 22:29 UTCEPSS rescore
  39. 2026-05-31 22:29 UTCEPSS rescore
  40. 2026-05-31 00:14 UTCEPSS rescore
  41. 2026-05-31 00:14 UTCEPSS rescore
  42. 2026-05-29 13:42 UTCEPSS rescore
  43. 2026-05-28 13:43 UTCEPSS rescore
  44. 2026-05-27 13:38 UTCEPSS rescore
  45. 2026-05-27 13:22 UTCEG score recompute
  46. 2026-05-27 13:22 UTCVendor advisory
  47. 2026-05-27 13:22 UTCGHSA enrichment
  48. 2026-05-26 13:42 UTCEPSS rescore
  49. 2026-05-26 13:42 UTCEPSS rescore
  50. 2026-05-26 07:17 UTCEPSS rescore
  51. 2026-05-26 07:17 UTCEPSS rescore
  52. 2026-05-26 07:17 UTCEPSS rescore
  53. 2026-05-24 04:02 UTCOSV refresh

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2019-17041?
CVE-2019-17041 is a critical vulnerability published on October 7, 2019. An issue was discovered in Rsyslog v8.1908.0. contrib/pmaixforwardedfrom/pmaixforwardedfrom.c has a heap overflow in the parser for AIX log messages. The parser tries to locate a log message delimiter (in this case, a space or a colon) but fails to account for strings that do not satisfy this…
When was CVE-2019-17041 disclosed?
CVE-2019-17041 was first published in the National Vulnerability Database on October 7, 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-2019-17041 actively exploited?
CVE-2019-17041 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 90.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2019-17041?
CVE-2019-17041 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2019-17041?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-17041, 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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