CVE-2024-22857

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2024-03-07. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 9.8Exploit: NoneExposed: 0

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

Heap based buffer flow in zlog v1.1.0 to v1.2.17 in zlog_rule_new().The size of record_name is MAXLEN_PATH(1024) + 1 but file_path may have data upto MAXLEN_CFG_LINE(MAXLEN_PATH*4) + 1. So a check was missing in zlog_rule_new() while copying the record_name from file_path + 1 which caused the buffer overflow. An attacker can exploit this vulnerability to overwrite the zlog_record_fn record_func function pointer to get arbitrary code execution or potentially cause remote code execution (RCE).

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
60(Track*)
EG Risk 60/100SSVC: 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%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS
74.8%
KEV
Not listed

Published

March 7, 2024

Last Modified

April 15, 2026

Advisory Details (5)

Auto-updated May 3, 2026
🔬 Proof of concept available. Patch available.
generic🟡 PoC Available

Arbitrary Code Execution in ZLOG (CVE-2024-22857)

https://www.ebryx.com/blogs/arbitrary-code-execution-in-zlog-cve-2024-22857
generic Patch Available

SB2024022842 - Remote code execution in zlog

https://www.cybersecurity-help.cz/vdb/SB2024022842
generic

CVE-2024-22857: buffer overflow patched by locus-x64 · Pull Request #251 · HardySimpson/zlog · GitHub

https://github.com/HardySimpson/zlog/pull/251
generic

zlog/src/rule.h at 1a7b1a6fb956b92a4079ccc91f30da21f34ca063 · HardySimpson/zlog · GitHub

https://github.com/HardySimpson/zlog/blob/1a7b1a6fb956b92a4079ccc91f30da21f34ca063/src/rule.h#L30
generic

GitHub - HardySimpson/zlog: A reliable, high-performance, thread safe, flexsible, clear-model, pure C logging library. · GitHub

https://github.com/HardySimpson/zlog/

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 45× 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.

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Frequently asked(5)

What is CVE-2024-22857?
CVE-2024-22857 is a critical vulnerability published on March 7, 2024. Heap based buffer flow in zlog v1.1.0 to v1.2.17 in zlogrulenew().The size of recordname is MAXLENPATH(1024) + 1 but filepath may have data upto MAXLENCFGLINE(MAXLENPATH*4) + 1. So a check was missing in zlogrulenew() while copying the recordname from filepath + 1 which caused the buffer overflow.…
When was CVE-2024-22857 disclosed?
CVE-2024-22857 was first published in the National Vulnerability Database on March 7, 2024, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-22857 actively exploited?
CVE-2024-22857 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 74.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2024-22857?
CVE-2024-22857 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2024-22857?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-22857, 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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