CVE-2011-10025Public exploit

Arbitrary code execution via Unicode stack overflow

Published Aug 20, 2025 · Updated May 15, 2026

Buffer overflow in Subtitle Processor 7.7.1 allows attackers to execute arbitrary code when a crafted .m3u playlist is opened. The .m3u parser converts playlist input to Unicode and copies the expanded data into a fixed-size stack buffer without checking its length, allowing the SEH record to be overwritten. Execution requires the crafted file to be opened, and successful SEH control runs code in the affected application context.

CVSS severity8.5
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in Subtitle Processor 7.7.1 allows attackers to execute arbitrary code when a crafted .m3u playlist is opened. The .m3u parser converts playlist input to Unicode and copies the expanded data into a fixed-size stack buffer without checking its length, allowing the SEH record to be overwritten. Execution requires the crafted file to be opened, and successful SEH control runs code in the affected application context.

The record

CVE
CVE-2011-10025
Published
Aug 20, 2025
Updated
May 15, 2026
Vendor
Jan Klir
Product
Subtitle Processor
Classifications
CWE-120, CAPEC-100, T1203, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 20, 2025CVE publishedPublication date reported by the CVE source.
  2. May 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=7.7.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Jan Klir · Subtitle Processorversion=0 <=7.7.1

Published CVSS scores

8.5VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CAPEC-100Overflow Buffers
T1203Exploitation for Client Execution
T1204.002Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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