CVE-2026-48092

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 75% 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
Elevated
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: Elevated riskExposed: 0

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

7-Zip is a file archiver with a high compression ratio. Versions 9.34 through 26.00 contain a heap memory disclosure via SquashFS fragment offset integer overflow on 32-bit builds. 32-bit integer overflow in the SquashFS ReadBlock function allows an attacker-controlled node.Offset value to bypass the fragment bounds check, causing memcpy to read heap memory preceding the cache buffer into the extracted file. The vulnerability is exploitable only on 32-bit builds of 7-Zip where size_t is 32 bits, allowing the addition offsetInBlock + blockSize to wrap modulo 2³². On 64-bit builds the addition is promoted to 64 bits and the check correctly rejects the input. Version 26.01 patches the issue.

CVSS v3
8.1
EG Score
8.1(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
Severity81% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
25%
KEV
Not listed

Published

June 5, 2026

Last Modified

June 8, 2026

Advisory Details (1)

Auto-updated Jun 9, 2026
🔬 Proof of concept available. No patch confirmed yet. Sources: github.
github🟡 PoC Available

GHSL-2026-115–GHSL-2026-122: Various memory access violations in 7-Zip | GitHub Security Lab

https://securitylab.github.com/advisories/GHSL-2026-115_GHSL-2026-122_7-zip/

Affected Packages

(7 across 5 ecosystems)
Debian:12(2)
PackageVulnerable rangeFixed inDependents
7zip22.01+dfsg-10~exp1, 22.01+dfsg-8, 22.01+dfsg-8+deb12u1, 22.01+dfsg-9, 22.01+really25.01+dfsg-0+deb12u122.01+really26.01+dfsg-0+deb12u1—
p7zip16.02+dfsg-8, 16.02+really25.01+dfsg-0+deb12u116.02+really26.01+dfsg-0+deb12u1—
Debian:13(2)
PackageVulnerable rangeFixed inDependents
7zip24.09+dfsg-8 ... 26.02+dfsg-3 (24 versions)——
p7zip—16.02+transitional.1—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
7zip—26.01-r0—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
p7zip16.02+dfsg-8, 16.02+really25.01+dfsg-0+deb11u116.02+really26.01+dfsg-0+deb11u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
7zip24.09+dfsg-8 ... 26.00+dfsg1-3 (18 versions)26.01+dfsg-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 28× 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 132 total refreshes for this CVE.

  1. 2026-09-16 05:15 UTCEPSS rescore
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  1. 2026-08-19 17:04 UTCEPSS rescore
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  75. 2026-06-23 21:33 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-48092?
CVE-2026-48092 is a high vulnerability published on June 5, 2026. 7-Zip is a file archiver with a high compression ratio. Versions 9.34 through 26.00 contain a heap memory disclosure via SquashFS fragment offset integer overflow on 32-bit builds. 32-bit integer overflow in the SquashFS ReadBlock function allows an attacker-controlled node.Offset value to bypass…
When was CVE-2026-48092 disclosed?
CVE-2026-48092 was first published in the National Vulnerability Database on June 5, 2026, with the most recent update on June 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48092 actively exploited?
CVE-2026-48092 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 74.7% of all scored CVEs.
What is the CVSS score of CVE-2026-48092?
CVE-2026-48092 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-48092?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48092, 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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