VulnSocial

CVE-2026-95508Disclosure

LOWCVSS 7.4 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

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.

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0.5/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-787

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-09-22); latest day: 1
  • 2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-09-22: 1Mentions · 2026-09-28: 1Patch / Workaround · 2026-09-28: 1Technical Details · 2026-09-22: 1Technical Details · 2026-09-28: 109-2209-28
Signal classification2 categories
Disclosure
150.0%
Patch
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-09-221
Disclosure1
2026-09-281
Patch1
Full discourse2 posts
  • Hugo | DevOps | Cybersecurity 🇱🇻@HugoValters
    Patch

    CVE-2026-95508 libslirp heap overflow: guest-controlled DHCPv6/TFTP options can smash host memory, DoS and possible RCE. CVSS 7.4, unpatched. Check your MTU and update now. https://www.valtersit.com/cve/CVE-2026-95508/ #CVE #infosec #libslirp #libslirp #CVEALERT #CVE #infosec #Linux #XSS #valtersit #snippet #SysAdmin #cybersecurity #devsecops #devops #developer #100daysofcode #git #github #gitlab #redteam #blueteam #ethicalhacker #cybersecurityawareness #cybersecuritynews #cybersecuritytips #python #hacker #kali #ubuntu #debian #docker

    Post summary

    The tweet describes CVE-2026-95508 as an unpatched heap overflow in libslirp via DHCPv6/TFTP options that can cause DoS and possible RCE (CVSS 7.4) and urges readers to update now.

    0000046
    1.1K followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-95508 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 … https://www.cve.org/CVERecord?id=CVE-2026-95508

    Post summary

    The snippet announces CVE-2026-95508, detailing a heap-based buffer overflow in libslirp's DHCPv6/TFTP response builders triggered by a small MTU and guest-supplied input, with no PoC, exploit, patch, or active exploitation mentioned.

    00000802
    58.1K followersView on X

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