Security readout for executives and security teams
Plain-English summary
This issue can crash WinRAR 5.61 32-bit when it loads a malformed language file from its installation directory. It is a local denial-of-service problem, not evidence of data theft or remote compromise. Business impact is mainly user disruption on systems where this older WinRAR version is installed.
Executive priority
Prioritize normal patch and hygiene workflows, not emergency response. The issue is local and limited to application availability, but public proof-of-concept material raises the value of removing obsolete WinRAR versions from managed endpoints.
Technical view
CVE-2019-25677 affects WinRAR 5.61 32-bit. A malformed winrar.lng file in the installation directory can trigger an access violation when an archive is opened and the test function is used. The CVSS 4.0 vector rates local attack complexity low with high impact to application availability only.
Likely exposure
Exposure is likely limited to endpoints running WinRAR 5.61 32-bit. The described condition requires local placement of a malformed language file in the WinRAR installation directory. Organizations with modern WinRAR versions or no WinRAR deployment are less likely exposed, but should verify inventory.
Exploitation context
A public ExploitDB entry exists, but the provided sources do not show active exploitation, and the CVE is not listed as KEV. The known impact is crashing the application, not code execution. Treat it as a nuisance and operational-resilience issue unless additional local access risks exist.
Researcher notes
Evidence describes an access violation at 004F1DB8 caused by invalid language-file data. Sources identify CWE-379 and affected product WinRAR 5.61 32-bit. No vendor patch note is included in the provided bundle, so remediation should reference current WinRAR vendor guidance rather than assumed fixed versions.
Mitigation direction
- Inventory endpoints for WinRAR 5.61 32-bit installations.
- Check WinRAR vendor guidance for supported versions and fixes.
- Remove or upgrade unsupported legacy WinRAR installations where feasible.
- Restrict write access to application installation directories.
- Monitor for unexpected changes to WinRAR language files.
Validation and detection
- Confirm whether WinRAR 5.61 32-bit is installed.
- Review installation directory permissions and file integrity controls.
- Check for unexpected winrar.lng files in WinRAR directories.
- Verify endpoint software inventory reflects upgraded or removed installations.
- Document any exceptions for legacy systems requiring this version.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-379: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2019-25677 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.9 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
6.9MediumVector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-46432CVE reference · exploit
- Product ReferenceCVE reference · product
- VulnCheck Advisory: WinRAR 5.61 Denial of Service via Malformed Language FileCVE reference · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Creation of Temporary File in Directory with Insecure Permissions
Creation of Temporary File in Directory with Insecure Permissions represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.