Security readout for executives and security teams
Plain-English summary
Opening a malicious .m3u playlist in Subtitle Processor 7.7.1 can let an attacker run code on the user's machine. This is not a remote server bug; it depends on a user opening a crafted file. Public exploit references exist, but the supplied sources do not show confirmed active exploitation.
Executive priority
Treat as high priority if Subtitle Processor is present in the environment. The main business risk is user-assisted endpoint compromise through file handling. If the software is absent, prioritize detection coverage and blocking controls over emergency response.
Technical view
Subtitle Processor 7.7.1 has a CWE-120 stack buffer overflow in its .m3u parser. Crafted playlist input is converted to Unicode and copied into a fixed-size stack buffer without adequate bounds checks, allowing SEH overwrite and arbitrary code execution after user interaction.
Likely exposure
Exposure is most likely on endpoints with legacy Subtitle Processor installed, especially where users handle subtitle or playlist files from untrusted sources. The bundle does not establish broader affected versions beyond the named 7.7.1 case.
Exploitation context
The CVSS vector is local, low complexity, no privileges required, with passive user interaction. Rapid7 Metasploit and Exploit-DB references indicate public exploit material, but KEV is false and the bundle provides no active exploitation evidence.
Researcher notes
Evidence supports a file-format memory corruption issue with SEH overwrite and public exploit references. The supplied affected metadata is incomplete, listing default status unknown and version data that does not clarify the full affected range.
Mitigation direction
- Remove Subtitle Processor where it is not business-required.
- Block or quarantine untrusted .m3u files from email and web download paths.
- Train affected users not to open unsolicited playlist files.
- Check vendor guidance; no named patch is provided in the bundle.
- Replace with supported software if no maintained fix exists.
Validation and detection
- Inventory endpoints for Subtitle Processor, especially version 7.7.1.
- Review file associations for .m3u files on managed endpoints.
- Check EDR and email telemetry for suspicious .m3u attachments or downloads.
- Confirm whether any business workflow requires Subtitle Processor.
- Verify vendor or project pages for maintained releases or advisories.
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-120: 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2011-10025 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
- 8.5 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA: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:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——VulnCheckVulnerability scoring details
Base CVSS 4.0 score
8.5HighVector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA: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://www.fortiguard.com/encyclopedia/ips/26849CVE reference, VulnCheck · third-party-advisory
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/fileformat/subtitle_processor_m3u_bof.rbCVE reference, VulnCheck · exploit
- https://www.exploit-db.com/exploits/17217CVE reference, VulnCheck · exploit
- https://www.exploit-db.com/exploits/17225CVE reference, VulnCheck · exploit
- https://sourceforge.net/projects/subtitleproc/CVE reference, VulnCheck · product
- https://www.vulncheck.com/advisories/subtitle-processor-m3u-seh-unicode-buffer-overflowCVE reference, VulnCheck · 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.
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.