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Analyze » Debian » TUXCANDEBROC1780943498

Incident Score: Analysis & Impact (TUXCANDEBROC1780943498)

The details regarding individual company incidents & reports gives you full view from every side.

Rankiteo Score Impact Analysis

Rankiteo Incident Impact-5
Company Score Before Incident756 / 1000
Company Score After Incident751 / 1000
Company LinkView Debian Profile
INCIDENT NUMBERTUXCANDEBROC1780943498
Type of Cyber IncidentVulnerability
ATTACK VECTORLocal
DATA EXPOSEDNA
INCIDENT DATE04/02/2026
STATUSResolved

Key Highlights From The Incident Analysis

  • Timeline of Debian's Vulnerability and lateral movement inside company's environment.
  • Overview of affected data sets, including SSNs and PHI, and why they materially increase incident severity.
  • How Rankiteo’s incident engine converts technical details into a normalized incident score.
  • How this cyber incident impacts Debian Rankiteo cyber scoring and cyber rating.
  • Rankiteo’s MITRE ATT&CK correlation analysis for this incident, with associated confidence level.

Full Incident Analysis Transcript

In this Rankiteo incident briefing, we review the Debian breach identified under incident ID TUXCANDEBROC1780943498.

The analysis begins with a detailed overview of Debian's information like the linkedin page: https://www.linkedin.com/company/debian, the number of followers: 120372, the industry type: Software Development and the number of employees: 483 employees

After the initial compromise, the video explains how Rankiteo's incident engine converts technical details into a normalized incident score. The incident score before the incident was 756 and after the incident was 751 with a difference of -5 which is could be a good indicator of the severity and impact of the incident.

In the next step of the video, we will analyze in more details the incident and the impact it had on Debian and their customers.

On 05 February 2026, Debian disclosed Vulnerability Exploitation issues under the banner "Critical Linux Kernel Vulnerability (CVE-2026-23111) Enables Local Privilege Escalation".

A use-after-free vulnerability in the Linux kernel’s nftables subsystem has been disclosed, allowing unprivileged local attackers to escalate privileges to root on widely used distributions, including Debian Bookworm, Debian Trixie, Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS.

The disruption is felt across the environment, affecting Privilege escalation to root.

In response, moved swiftly to contain the threat with measures like Kernel patch applied upstream, and began remediation that includes Update to patched kernel version.

The case underscores how Resolved, teams are taking away lessons such as The vulnerability underscores the ongoing risks of privilege escalation in Linux environments, particularly in systems relying on nftables for network filtering, and recommending next steps like Update to the latest patched kernel version to mitigate the risk of privilege escalation.

Finally, we try to match the incident with the MITRE ATT&CK framework to see if there is any correlation between the incident and the MITRE ATT&CK framework.

The MITRE ATT&CK framework is a knowledge base of techniques and sub-techniques that are used to describe the tactics and procedures of cyber adversaries. It is a powerful tool for understanding the threat landscape and for developing effective defense strategies.

MITRE ATT&CK® Correlation Analysis

Rankiteo's analysis has identified several MITRE ATT&CK tactics and techniques associated with this incident, each with varying levels of confidence based on available evidence. Under the Privilege Escalation tactic, the analysis identified Exploitation for Privilege Escalation (T1068) with high confidence (95%), supported by evidence indicating use-after-free vulnerability in the Linux kernel’s nftables subsystem...escalate privileges to root. Under the Initial Access tactic, the analysis identified Valid Accounts (T1078) with moderate to high confidence (70%), supported by evidence indicating unprivileged local attackers...escalate privileges to root. Under the Defense Evasion tactic, the analysis identified Impair Defenses: Disable or Modify Tools (T1562.001) with moderate confidence (60%), supported by evidence indicating nftables, a packet filtering framework...vulnerability in nft_map_catchall_activate(). These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.

Privilege Escalation
Exploitation for Privilege Escalation (95%)
Initial Access
Valid Accounts (70%)
Defense Evasion
Impair Defenses: Disable or Modify Tools (60%)

Sources & References