Security readout for executives and security teams
Plain-English summary
CVE-2025-63365 is a directory traversal flaw in SoftSea EPUB File Reader 1.0.0.0. A user must open a malicious EPUB file. If exploited, the reader may write extracted EPUB contents outside the intended folder, risking sensitive file exposure or file tampering. No source provided shows active exploitation.
Executive priority
Treat this as a targeted endpoint risk, not an internet-wide emergency. Prioritize environments where users handle external EPUB files or where file integrity and confidentiality are critical. Act promptly to inventory exposure and follow vendor guidance when available.
Technical view
The issue is CWE-22 in the EPUB archive extraction and handling component. CVSS 3.1 is 7.1: local attack vector, low complexity, no privileges, user interaction required, unchanged scope, high confidentiality and integrity impact, no availability impact. The CVE metadata lists affected vendor/product as n/a, but the title and description name SoftSea EPUB File Reader 1.0.0.0.
Likely exposure
Exposure is likely limited to endpoints where SoftSea EPUB File Reader 1.0.0.0 is installed and users can open EPUB files from email, web downloads, file shares, or removable media. Server exposure is not indicated by the sources.
Exploitation context
The attacker would need to get a target user to open a crafted EPUB file locally. CISA KEV is false in the provided data, and no cited source states active exploitation. Public exploitability details are not assessed beyond the CVE and advisory description.
Researcher notes
Evidence is limited to the CVE record and one advisory reference. The CVE affected-product fields are incomplete, while the narrative names SoftSea EPUB File Reader 1.0.0.0. No patch, workaround, proof-of-concept status, or exploitation-in-the-wild evidence is provided in the source bundle.
Mitigation direction
- Identify and restrict use of SoftSea EPUB File Reader 1.0.0.0.
- Check the vendor or advisory source for an updated version or official workaround.
- Avoid opening EPUB files from untrusted sources until guidance is available.
- Use endpoint controls to limit untrusted document handling where feasible.
- Consider removing or replacing the software if no maintained fix exists.
Validation and detection
- Inventory endpoints for SoftSea EPUB File Reader 1.0.0.0.
- Confirm file associations for EPUB files on managed endpoints.
- Review security tools for alerts tied to EPUB handling or unexpected file writes.
- Check the referenced advisory and CVE record for updates.
- Document compensating controls for systems that cannot be changed immediately.
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-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. 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 lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2025-63365 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
- High
- CVSS
- 7.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
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:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N1.85.2CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
7.1HighVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://jeroscope.com/advisories/2025/jero-2025-001/CVE reference, mitre
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.