High severity · published Jul 17, 2025
CVE-2025-53817
GHSL-2025-059 - 7-Zip - Null pointer array write attempt in NArchive::NCom::CHandler::GetStream
7.5
CVSS
0.7%
EPSS
No
On KEV
Description
7-Zip is a file archiver with a high compression ratio. 7-Zip supports extracting from Compound Documents. Prior to version 25.0.0, a null pointer dereference in the Compound handler may lead to denial of service. Version 25.0.0 contains a fix cor the issue.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 53% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
7Z
7-Zip · ipavlov
< 25.0.0 · source: vendor, NVD
In the news
ThreatIntelHigh
Mitsubishi Electric MELSOFT Update Manager SW1DND-UDM-M
View CSAF
Summary
Successful exploitation of these vulnerabilities could allow a local attacker to tamper with or destroy information in the affected product, cause a denial-of-service condition in the affected product, or execute arbitrary code when a specially crafted archive file is decompressed by the 7-Zip component included in MELSOFT Update Manager.
The following versions of Mitsubishi Electric MELSOFT Update Manager SW1DND-UDM-M are affected:
MELSOFT Update Manager SW1DND-UDM-M >=1.000A|<=1.014Q (CVE-2025-53816, CVE-2025-53817, CVE-2025-55188, CVE-2025-11001)
CVSS
Vendor
Equipment
Vulnerabilities
v3 8.8
Mitsubishi Electric
Mitsubishi Electric MELSOFT Update Manager SW1DND-UDM-M
Heap-based Buffer Overflow, NULL Pointer Dereference, Improper Link Resolution Before File Access ('Link Following'), Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Background
Critical Infrastructure Sectors: Critical Manufacturing
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Japan
Vulnerabilities
Expand All +
CVE-2025-53816
A heap-based buffer overflow vulnerability exists in the 7-Zip component included in MELSOFT Update Manager SW1DND-UDM-M. This vulnerability could allow a local attacker to trigger a buffer overflow that may cause the affected product to enter a denial-of-service condition by convincing a legitimate user to decompress a sp...
Jun 30, 2026·CISA Advisories
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-53817
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-53817
Exploit
https://securitylab.github.com/advisories/GHSL-2025-059_7-Zip/
Exploit
https://www.openwall.com/lists/oss-security/2025/07/18/2
www.openwall.com
http://www.openwall.com/lists/oss-security/2025/07/18/2
More from 7-Zip
7.5
CVE-2025-53816
GHSL-2025-058 - 7-Zip Multi-byte write heap buffer overflow in NCompress::NRar5::CDecoder
