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CVE-2026-116502

turboderp-org ExLlamaV2 GPTQ Index q_matrix.cu make_sequential out-of-bounds write

CVSS score

4.8

EPSS probability

—

Risk score

0.5

Published

3 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

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Vulnerability description

DayBreach AI Explanation

Verified against sources

turboderp-org ExLlamaV2 QMatrix::make_sequential Out-of-Bounds Write Vulnerability

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

A flaw exists in turboderp-org ExLlamaV2 up to version 0.3.2 within the QMatrix::make_sequential function, leading to an out-of-bounds write. The attack must be launched locally by manipulating the g_idx argument.

Why does it matter?

This vulnerability allows a local attacker to perform out-of-bounds write operations affecting integrity and availability. The patch status remains unknown.

What should be done?

  • Follow vendor advisories
  • Apply developer updates when available
  • Strengthen local access controls
Chain of evidence and sources2 verified claims

turboderp-org ExLlamaV2 0.3.2 ve önceki sürümleri QMatrix::make_sequential fonksiyonunda bellek sınırları dışına yazma zafiyeti içermektedir.

S0 · daybreach-canonicalS1 · cvelist

Saldırının yerel olarak gerçekleştirilmesi ve g_idx argümanının manipüle edilmesi gerekmektedir.

S0 · daybreach-canonicalS1 · cvelist
Show the technical text from the sources

A flaw has been found in turboderp-org ExLlamaV2 up to 0.3.2. The impacted element is the function QMatrix::make_sequential of the file exllamav2/exllamav2_ext/cuda/q_matrix.cu of the component GPTQ Index Handler. Executing a manipulation of the argument g_idx can lead to out-of-bounds write. The attack needs to be launched locally. The project was informed of the problem early through an issue report but has not responded yet.

CVSS vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X

CWE: CWE-787, CWE-119

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-116502 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1Turboderp-orgExLlamaV2 View
Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
4.8CVSS V4_0MEDIUMCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:XCVE CNA
4.8CVSS V40MEDIUMCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XNVD
4.4CVSS V3_1MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:X/RC:CCVE CNA
4.4CVSS V3_0MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:X/RC:CCVE CNA
4.4CVSS V31MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:LNVD
3.2CVSS V2_0—AV:L/AC:L/Au:S/C:N/I:P/A:P/E:ND/RL:ND/RC:CCVE CNA
3.2CVSS V2—AV:L/AC:L/Au:S/C:N/I:P/A:PNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-116502 is associated with the following CWEs:

CWE-787: Out-of-bounds WriteCWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-116502 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureYerel erişim
PermissionsLow
UserGerekmiyor

Official Sources and Advisories

VDB-426401 | turboderp-org ExLlamaV2 GPTQ Index q_matrix.cu make_sequential out-of-bounds writevendor-advisoryVDB-426401 | CTI Indicators (IOB, IOC, IOA)vendor-advisoryCVE-2026-116502 | CVE Analysis and Reportvendor-advisorySubmit #1022425 | turboderp-org / ExLlamaV2 exllamav2 0.0.4 - 0.3.2 Heap out-of-bounds write caused by an unvalidated GPTQ `g_idx` vvendor-advisoryhttps://github.com/turboderp-org/exllamav2/issues/817vendor-advisoryhttps://github.com/turboderp-org/exllamav2/vendor-advisory

CVSS Vector Radar Chart

4.8 / 10
Attack VectorLocalComplexityLowPrivilegesLowUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityLow

Vulnerability Scoring Details

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow privileges
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)Low

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

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Weakness Type (CWE & CAPEC)

CWE-787 CWE-119

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CVE-2026-116502 · turboderp-org ExLlamaV2 GPTQ Index…