CVE-2026-22780

MEDIUMNVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.1 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 92% 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
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.1Exploit: None knownExposed: 0

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

Rizin is a UNIX-like reverse engineering framework and command-line toolset. Prior to 0.8.2, a heap overflow can be exploited when a malicious mach0 file, having bogus entries for the dyld chained segments, is parsed by rizin. This vulnerability is fixed in 0.8.2.

CVSS v3
6.1
EG Score
6.1(medium)
EG Risk
28(Track)
EG Risk 28/100SSVC: 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
Severity61% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
8%
KEV
Not listed

Published

February 2, 2026

Last Modified

June 17, 2026

Advisory Details (6)

Auto-updated Aug 9, 2026
Patch available. Sources: github_commit, github_pr, github_release, github.
github Patch Available

Heap overflow on mach0_chained_fixups.c · Advisory · rizinorg/rizin · GitHub

https://github.com/rizinorg/rizin/security/advisories/GHSA-f3v7-xhmj-9cjj
github_release Patch Available

Release v0.8.2

Patch available: rizinorg/rizin v0.8.2

https://github.com/rizinorg/rizin/releases/tag/v0.8.2
github_pr

Fix wrong check on max_count of chained segments.

Fix merged in rizinorg/rizin PR #5770 on 2026-01-10 — awaiting tagged release

https://github.com/rizinorg/rizin/pull/5770
generic

Heap-based OOB write in mach0_chained_fixups.c when analyzing Mach-O bin · Issue #5768 · rizinorg/rizin · GitHub

https://github.com/rizinorg/rizin/issues/5768
github_commit

commit 41ea75d5b07d (rizinorg/rizin)

Fix landed in rizinorg/rizin commit 41ea75d5b07d — awaiting tagged release

https://github.com/rizinorg/rizin/commit/41ea75d5b07d9b41b27ae80675cdda65f1b1c989
generic

rizin/librz/bin/format/mach0/mach0_chained_fixups.c at 6dd0dba9ff4dc706f549d0cdcd93856b49e59aa0 · rizinorg/rizin · GitHub

https://github.com/rizinorg/rizin/blob/6dd0dba9ff4dc706f549d0cdcd93856b49e59aa0/librz/bin/format/mach0/mach0_chained_fixups.c#L200

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 25× 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 157 total refreshes for this CVE.

  1. 2026-09-20 20:15 UTCEPSS rescore
  2. 2026-09-18 23:36 UTCOSV refresh
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  24. 2026-08-02 21:40 UTCEG score recompute▲ 1.70
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Frequently asked(5)

What is CVE-2026-22780?
CVE-2026-22780 is a medium vulnerability published on February 2, 2026. Rizin is a UNIX-like reverse engineering framework and command-line toolset. Prior to 0.8.2, a heap overflow can be exploited when a malicious mach0 file, having bogus entries for the dyld chained segments, is parsed by rizin. This vulnerability is fixed in 0.8.2.
When was CVE-2026-22780 disclosed?
CVE-2026-22780 was first published in the National Vulnerability Database on February 2, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-22780 actively exploited?
CVE-2026-22780 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 91.6% of all scored CVEs.
What is the CVSS score of CVE-2026-22780?
CVE-2026-22780 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2026-22780?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-22780, 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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