NVD

CVE-2026-43628 Detail

Received

This CVE record has recently been published to the CVE List and has been included within the NVD dataset.

Description

llama.cpp builds b3978 through b9058 contain an integer underflow and out-of-bounds read vulnerability in the DRY sampler that allows unauthenticated attackers to trigger a heap buffer underflow by sending a crafted HTTP request with dry_allowed_length set to INT32_MIN to the /v1/completions or /v1/chat/completions endpoints. Attackers can exploit this vulnerability to crash the server with SIGSEGV causing denial of service for all connected users, or corrupt token sampling probabilities by reading garbage values from memory before the allocated buffer.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

Nist CVSS score does not match with CNA score

CNA: VulnCheck

CVSS-B 8.5 HIGH

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.x Severity and Vector Strings:

CNA: VulnCheck

Base Score: 7.8 HIGH

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to [email protected].

URL	Source(s)	Tag(s)
https://github.com/Vladimir-tokarev-cyera/llama-cpp-security-patches	VulnCheck

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-125	Out-of-bounds Read	VulnCheck
CWE-191	Integer Underflow (Wrap or Wraparound)	VulnCheck

Change History

1 change records found show changes

New CVE Received from VulnCheck 8/06/2026 6:17:05 PM

Action	Type	New Value
Added	Description	llama.cpp builds b3978 through b9058 contain an integer underflow and out-of-bounds read vulnerability in the DRY sampler that allows unauthenticated attackers to trigger a heap buffer underflow by sending a crafted HTTP request with dry_allowed_length set to INT32_MIN to the /v1/completions or /v1/chat/completions endpoints. Attackers can exploit this vulnerability to crash the server with SIGSEGV causing denial of service for all connected users, or corrupt token sampling probabilities by reading garbage values from memory before the allocated buffer.
Added	CVSS V4.0	AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/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:X
Added	CVSS V3.1	AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Added	CWE	CWE-125
Added	CWE	CWE-191
Added	Reference	https://github.com/Vladimir-tokarev-cyera/llama-cpp-security-patches
Added	Affected	[{"vendor":"ggml-org","product":"llama.cpp","defaultStatus":"affected","versions":[{"version":"b3978","lessThanOrEqual":"b9058","versionType":"custom","status":"affected"},{"version":"0.11.0","lessThanOrEqual":"0.17.1","versionType":"semver","status":"affected"}]}]

Quick Info

CVE Dictionary Entry:
CVE-2026-43628
NVD Published Date:
08/06/2026
NVD Last Modified:
08/06/2026
Source:
VulnCheck

You are viewing this page in an unauthorized frame window.

Information Technology Laboratory

National Vulnerability Database