VulnerabilityPublished 19 Nov 2025

CVE-2025-11001: Hackers Actively Exploiting 7-Zip Symbolic Link–Based RCE Vulnerability

Source Reddit InfoSec News

Public exploit available (Exploit-DB) · 27% EPSS.

Data as of 26 Oct 2026, 11:42 UTC

Severity

High

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS: 27.3% chance of exploitation in 30 days – higher than 98% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation evidence

Disclosed: evidence found.
Public on cve.org; its publication date is not in this record
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: evidence found.
1 Exploit-DB entry, on 8 Apr 2026
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

AI-suggested

Organizations should immediately implement the following measures: 1) Monitor official 7-Zip channels for patches addressing CVE-2025-11001 and apply updates promptly once available. 2) Until patches are released, restrict the use of 7-Zip for extracting archives from untrusted or unknown sources, especially in high-risk environments. 3) Employ application whitelisting and endpoint protection solutions to detect and block suspicious archive extraction activities and unauthorized file modifications. 4) Configure user permissions to limit the ability to write or overwrite critical system files during archive extraction, reducing the impact of symlink exploitation. 5) Educate users about the risks of opening archives from unverified sources and encourage cautious handling of email attachments and downloads. 6) Implement network segmentation to contain potential breaches and limit lateral movement if exploitation occurs. 7) Use monitoring and logging to detect anomalous file system changes indicative of symlink abuse. 8) Consider alternative archiving tools with more secure symlink handling until 7-Zip patches are available. These targeted steps go beyond generic advice by focusing on symlink-specific risks and operational controls tailored to 7-Zip usage patterns.

Description

A high-severity remote code execution (RCE) vulnerability identified as CVE-2025-11001 affects 7-Zip, leveraging symbolic link (symlink) handling flaws. Attackers can exploit this vulnerability to execute arbitrary code on affected systems by crafting malicious archives that abuse symlink processing during extraction. Although no known exploits are currently observed in the wild, active exploitation attempts have been reported, indicating an urgent threat. The vulnerability impacts users of 7-Zip, a widely used open-source file archiver, particularly on Windows platforms. European organizations relying on 7-Zip for file compression and decompression are at risk of compromise, potentially leading to data breaches, system takeover, and lateral movement within networks. Mitigation requires immediate patching once updates are available, restricting archive extraction privileges, and monitoring for suspicious archive handling activities. Countries with high adoption of 7-Zip in enterprise environments and critical infrastructure sectors, such as Germany, France, and the UK, are most likely to be targeted. Given the ease of exploitation without authentication and the potential for full system compromise, this vulnerability is assessed as critical. Defenders must prioritize awareness, implement compensating controls, and prepare for incident response related to this threat.

Impact

European organizations using 7-Zip are at risk of remote code execution attacks that can lead to unauthorized access, data theft, ransomware deployment, and disruption of critical services. The vulnerability can compromise confidentiality by exposing sensitive data, integrity by allowing unauthorized modification of files, and availability by enabling destructive payloads or system crashes. Enterprises in sectors such as finance, healthcare, manufacturing, and government are particularly vulnerable due to their reliance on file archiving tools and the sensitive nature of their data. The ability for attackers to execute code remotely without authentication means that even low-privileged users or external attackers delivering malicious archives can cause significant damage. This threat could facilitate lateral movement within networks, enabling attackers to escalate privileges and compromise additional systems. The exploitation of this vulnerability could also undermine trust in software supply chains and disrupt business continuity. Given Europe's stringent data protection regulations like GDPR, breaches resulting from this vulnerability could lead to substantial legal and financial penalties.

Summary

CVE-2025-11001 is a remote code execution vulnerability in 7-Zip that arises from improper handling of symbolic links within archive files. When 7-Zip extracts archives containing maliciously crafted symbolic links, it can inadvertently overwrite or create files outside the intended extraction directory, enabling attackers to execute arbitrary code with the privileges of the user running the extraction process. This vulnerability exploits the way 7-Zip resolves and processes symbolic links, bypassing normal security checks. Attackers can embed these malicious symlinks in archive files distributed via email, downloads, or shared drives. Upon extraction, the payload triggers, allowing code execution that can lead to full system compromise. Although no public patches or CVSS scores have been released yet, the vulnerability is rated high severity due to its potential impact and ease of exploitation. The threat is particularly concerning because 7-Zip is widely used across personal, enterprise, and critical infrastructure environments, especially on Windows systems where symbolic link handling is sensitive. The active exploitation reports, despite minimal discussion on Reddit, highlight the urgency for organizations to prepare defenses. The absence of authentication requirements and the ability to trigger the exploit via user-initiated archive extraction increase the risk profile. This vulnerability underscores the need for secure archive handling practices and timely patch management.

References

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Exploitation evidence

What to do

Description

AI analysisMachine-generated, updated 19 Nov 2025, 18:56 UTC

Public exploits and detection1 Exploit-DB entry

Technical details

References

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