KEVWire

Security intelligence, with context.

Response snapshot Nov 3, 2026, 08:21 UTC

Back to the wire
Permalink
VulnerabilityCVE-2026-95508

A heap-based buffer overflow was found in the DHCPv6 and TFTP response builders of libslirp.

A heap-based buffer overflow was found in the DHCPv6 and TFTP response builders of libslirp.

At a glance

Exploited
Not known
Severity
7.4 High (CVSS 3.1)
Chance of exploitation
Not estimated
Sources
1 source

What to do

Check the vendor advisory for affected versions and fixes.

Read NVD CVE-2026-95508 (opens a new tab)

What happened

A heap-based buffer overflow was found in the DHCPv6 and TFTP response builders of libslirp. When the host is configured with a small interface MTU, a guest-supplied DHCPv6 CLIENTID option or TFTP blksize option can overflow the reply buffer with attacker-controlled content and length, resulting in denial of service and potentially arbitrary code execution in the host process. The default interface MTU is not affected.

Scores and how they were measured

CVSS base severity

7.4

Version 3.1As of

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

Measurement source (opens a new tab)

How bad it is if exploited. Not a prediction of exploitation or proof you are exposed.

EPSS probability

Not available

A model's estimate of exploitation in the next 30 days, not certainty or your own risk.

Sources

  1. Primary source

    NVD CVE-2026-95508 (opens a new tab)

    NVD record: description, CVSS (the CNA score is preferred), affected products, and publication date. Not evidence of exploitation.

    Published Checked

  2. Primary source

    NVD CVE API 2.0 (opens a new tab)

    The NVD API page that supplied this CVE record.

    Published Date not suppliedChecked

  3. Primary source

    NVD CVE API 2.0 (opens a new tab)

    The NVD API page that supplied this CVE record.

    Published Date not suppliedChecked

  4. Primary source

    NVD CVE API 2.0 (opens a new tab)

    The NVD API page that supplied this CVE record.

    Published Date not suppliedChecked

Cite this record

For factual claims, cite the primary sources above; cite KEVWire for its compilation, dates, and classifications.

APA

KEVWire. (2026, November 3). A heap-based buffer overflow was found in the DHCPv6 and TFTP response builders of libslirp. (CVE-2026-95508). https://kevwire.com/record/CVE-2026-95508

MLA

"A heap-based buffer overflow was found in the DHCPv6 and TFTP response builders of libslirp. (CVE-2026-95508)." KEVWire, 3 Nov. 2026, kevwire.com/record/CVE-2026-95508.

Chicago

KEVWire. "A heap-based buffer overflow was found in the DHCPv6 and TFTP response builders of libslirp. (CVE-2026-95508)." Last modified November 3, 2026. https://kevwire.com/record/CVE-2026-95508.

Evidence summary (plain text)

A heap-based buffer overflow was found in the DHCPv6 and TFTP response builders of libslirp. (Sep 22, 2026).
A heap-based buffer overflow was found in the DHCPv6 and TFTP response builders of libslirp. When the host is configured with a small interface MTU, a guest-supplied DHCPv6 CLIENTID option or TFTP blksize option can overflow the reply buffer with attacker-controlled content and length, resulting in denial of service and potentially arbitrary code execution in the host process. The default interface MTU is not affected.
CVSS 7.4 (version 3.1; evidence as of Nov 3, 2026; https://nvd.nist.gov/vuln/detail/CVE-2026-95508).
Sources:
NVD CVE-2026-95508: https://nvd.nist.gov/vuln/detail/CVE-2026-95508
NVD CVE API 2.0: https://services.nvd.nist.gov/rest/json/cves/2.0?lastModStartDate=2026-11-03T05:11:05.880Z&lastModEndDate=2026-11-03T06:50:56.230Z&resultsPerPage=500&startIndex=0
NVD CVE API 2.0: https://services.nvd.nist.gov/rest/json/cves/2.0?lastModStartDate=2026-11-03T04:41:03.648Z&lastModEndDate=2026-11-03T06:10:58.210Z&resultsPerPage=500&startIndex=0
NVD CVE API 2.0: https://services.nvd.nist.gov/rest/json/cves/2.0?lastModStartDate=2026-11-03T04:00:58.552Z&lastModEndDate=2026-11-03T05:40:56.298Z&resultsPerPage=500&startIndex=0
Record ID: CVE-2026-95508.
Record origin: Ingested record.
AI evidence: Not assessed.
Known exploitation: Not assessed.
Zero-day status: Not assessed. KEV membership alone does not establish zero-day status.
About this data

This record was ingested from a data source. Retrieved: Nov 3, 2026, 06:50 UTC. Ingestion is not an independent editorial investigation.

NVD status: Awaiting Analysis. Publication in the NVD is not evidence of exploitation.

A CISA KEV listing documents known exploitation, not necessarily a zero-day; absence from the catalog does not prove a vulnerability has never been exploited.

Technology tags indicate possible relevance, not verified exposure. Confirm the affected product, version, and configuration against your own inventory; KEVWire does not scan your systems.

A personal reading checklist on this device, not verified remediation.

Record JSON

Your account

Email alerts

Email alerts are coming as part of KEVWire Premium: join the waitlist. To follow your stack today, use its RSS feed, which honors your filters, or connect an AI agent through the API.

Suggest an improvement

Ideas, missing sources, corrections, and bugs are all welcome. No account needed. Suggestions are reviewed by a person before anything changes.

Record details

Record detail