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! Timeframe this was added to wiki
! Timeframe this was added to wiki
! Discovered by
! Discovered by
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| [[NIM_Services|NIM]]: Downloading old title-versions from eShop
| Multiple NIM service commands(such as [[NIMS:StartDownload]]) use a title-version value specified by the user-process, NIM does not validate that this input version matches the latest version available via SOAP. Therefore, when combined with AM(PXI) [[#Process9|title-downgrading]] via deleting the target eShop title with System Settings Data Management(if the title was already installed), this allows downloading+installing any title-version from eShop ''if'' it's still available from CDN.
The easiest way to exploit this is to just patch the eShop system-application code using these NIM commands(ideally the code which loads the title-version).
Originally this was tested with a debugging-system via modded-FIRM, eventually smea implemented it in HANS for the 32c3 release.
| Downloading old title-versions from eShop
| None
| [[10.0.0-27|10.0.0-X]]
| October 24, 2015 (Unknown when exactly the first eShop title downgrade was actually tested, maybe November)
| January 7, 2015 (Same day Ironfall v1.0 was removed from CDN via the main-CXI files)
| [[User:Yellows8|Yellows8]]
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| [[SPI_Services|SPI]] service out-of-bounds write
| [[SPI_Services|SPI]] service out-of-bounds write