Wazuh is a free and open source platform used for threat prevention, detection, and response. From 1.0.0 until 4.14.6 and 5.0.0-beta2, HandleSecureMessage() in src/remoted/secure.c passes a pointer inside its stack buffer to ReadSecMSG(), and src/os_crypto/shared/msgs.c decompresses up to OS_MAXSTR bytes at that offset. For an encrypted agent message on TCP port 1514 that expands to 65,536 bytes, os_zlib_uncompress() writes a terminating null byte beyond the end of the destination buffer. The resulting stack out-of-bounds write in the root-level remoted daemon can crash message processing and disrupt agent communications. This issue is fixed in versions 4.14.6 and 5.0.0-beta2.
CVE-2026-44254
“—” beside the score: it is equal to the CVSS score beside it.
This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (41st percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 5.3
- EG Score
- 5.3MEDIUMmedium confidence
- EG Risk
- 24EG Risk 24/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity53% × 45%Impact severity (EG Severity): CVSS 5.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation0.5% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability0% × 15%CISA's SSVC Automatable value: no (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 0.5%
- EPSS %ILE
- 41st
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (5.3): severity, escalated by confirmed exploitation. This CVE's 5.3 is its impact severity (EG Severity), not escalated.
- EG Severity
- 5.3 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
- EG Likelihood
- 0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-17). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.
A fix is available. Apply it within your standard update timelines.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
August 19, 2026
Last Modified
September 18, 2026
Advisory Details (5)
Auto-updated Aug 19, 2026Stack Out-of-Bounds Write in remoted Decompression Path · Advisory · wazuh/wazuh · GitHub
https://github.com/wazuh/wazuh/security/advisories/GHSA-9wm4-fp6c-hqgqWazuh v5.0.0 Beta 2
Patch available: wazuh/wazuh v5.0.0-beta2 (pre-release)
https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2Wazuh v4.14.6
Patch available: wazuh/wazuh v4.14.6
https://github.com/wazuh/wazuh/releases/tag/v4.14.6Improve message handling robustness in wazuh-remoted
Patch available: wazuh/wazuh v5.0.0-beta2 (PR #35773 merged 2026-04-29)
https://github.com/wazuh/wazuh/pull/35773commit 96772487fbde (wazuh/wazuh)
Patch available: wazuh/wazuh v5.0.0-beta2 (contains commit 96772487fbde)
https://github.com/wazuh/wazuh/commit/96772487fbdecd43cc83e284ee7aeb45e3cfcd96Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 8× in last 7d / 40× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
- 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-18 03:39 UTCEG score recompute
- 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-12 16:05 UTCEG score recompute
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- 2026-10-11 14:27 UTCEG score recompute
- 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-07 10:28 UTCEG score recompute
- 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 40th percentile
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- 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-03 16:56 UTCEG score recompute
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- 2026-10-02 12:57 UTCEG score recompute
- 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 40th percentile
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- 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-09-30 08:45 UTCEG score recompute
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- 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
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- 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-09-25 00:59 UTCEG score recompute
- 2026-09-23 23:29 UTCEG score recompute
- 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.4% · 31st percentile
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- 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-09-19 16:33 UTCEG score recompute
- 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 29th percentile
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- 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.4% · 29th percentile
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- 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 28th percentile
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- 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.4% · 28th percentile
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- 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.4% · 28th percentile
- 2026-09-12 01:54 UTCEG score recompute
- 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 28th percentile
- 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.4% · 28th percentile
- 2026-09-11 00:24 UTCEG score recompute
- 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.4% · 28th percentile
- 2026-09-09 02:36 UTCEG score recompute
- 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.4% · 28th percentile
- 2026-09-07 23:27 UTCEG score recompute
- 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 28th percentile
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- 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.4% · 28th percentile
- 2026-09-02 15:19 UTCEG score recompute
- 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.4% · 28th percentile
- 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.4% · 28th percentile
- 2026-09-01 13:21 UTCEG score recompute
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- 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 28th percentile
- 2026-08-30 10:23 UTCEG score recompute
- 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 28th percentile
- 2026-08-29 08:52 UTCEG score recompute
- 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.4% · 28th percentile
- 2026-08-28 07:20 UTCEG score recompute
- 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 28th percentile
- 2026-08-27 05:45 UTCEG score recompute
- 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.4% · 28th percentile
- 2026-08-26 04:15 UTCEG score recompute
- 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.4% · 28th percentile
- 2026-08-25 02:45 UTCEG score recompute
- 2026-08-24 01:16 UTCEG score recompute
- 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.4% · 28th percentile
- 2026-08-22 23:47 UTCEG score recompute
- 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.4% · 28th percentile
- 2026-08-21 22:18 UTCEG score recompute
- 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.4% · 28th percentile
- 2026-08-19 19:20 UTCEG score recompute
- 2026-08-19 18:23 UTCEG score recompute
- 2026-08-19 16:24 UTCEG score recompute
- 2026-08-19 16:12 UTCEG score recomputeFirst assessed: 5.3 MEDIUM
- 2026-08-19 16:12 UTCMITRE cvelistV5first tracked
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Frequently asked(5)
What is CVE-2026-44254?
When was the CVE record for CVE-2026-44254 published?
Is CVE-2026-44254 actively exploited?
What is the CVSS score of CVE-2026-44254?
How do I remediate CVE-2026-44254?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-44254
Is Your Infrastructure Affected by CVE-2026-44254?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.