CVE-2012-6307Public exploitNetwork attack vector

Code execution via invalid JPEG decoder write

Published Feb 6, 2020 · Updated Aug 6, 2024

A write access violation in JPEGsnoop 1.5.2 allows context-dependent attackers to execute arbitrary code through a crafted JPEG file. During JPEG decoding, the instruction at JPEGsnoop executable offset 0xc8ae writes a 16-bit value through an invalid computed address, causing memory corruption. The published Windows proof of concept demonstrates an application crash; the CVE record asserts arbitrary code execution but provides no demonstrated execution payload.

CVSS severity8.8
High
EPSS probability5.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A write access violation in JPEGsnoop 1.5.2 allows context-dependent attackers to execute arbitrary code through a crafted JPEG file. During JPEG decoding, the instruction at JPEGsnoop executable offset 0xc8ae writes a 16-bit value through an invalid computed address, causing memory corruption. The published Windows proof of concept demonstrates an application crash; the CVE record asserts arbitrary code execution but provides no demonstrated execution payload.

The record

CVE
CVE-2012-6307
Published
Feb 6, 2020
Updated
Aug 6, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 6, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1203Exploitation for Client Execution

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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