# Security Notice for v0.14.34

**URL:** https://forum.syncthing.net/t/security-notice-for-v0-14-34/10320
**Category:** Announce
**Created:** [August 7, 2017, 5:49am UTC](https://forum.syncthing.net/t/security-notice-for-v0-14-34/10320 "2017-08-07T05:49:58Z")
**Posts on this page:** 6
**Page:** 1

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### Author: ![calmh](https://forum.syncthing.net/user_avatar/forum.syncthing.net/calmh/32/15311_2.png) [@calmh](https://forum.syncthing.net/u/calmh)
#### Post date: [August 7, 2017, 5:49am UTC](https://forum.syncthing.net/t/security-notice-for-v0-14-34/10320/1 "2017-08-07T05:49:58Z")

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Please be aware that v0.14.34 will be a security release. That is, it fixes a vulnerability present in all previous versions, _including v0.14.34-rc.1_. This is an exception to the normal release candidate process in that we’re adding a last patch on top of rc.1 before the final release.

The vulnerability lets a malicious user _on a trusted device_ (or, an attacker that has compromised an otherwise trusted device) overwrite any file that Syncthing can access, in some configurations. This easily becomes remote execution.

Windows is mostly not vulnerable, although the fix applies there as well to bring “mostly not” to “really not”. There is however one caveat that may require manual fixup - stay tuned for details tomorrow at the time of release.

Otherwise, if you’re not doing automatic upgrades, this may be one you want to do manually.

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### Author: ![calmh](https://forum.syncthing.net/user_avatar/forum.syncthing.net/calmh/32/15311_2.png) [@calmh](https://forum.syncthing.net/u/calmh)
#### Post date: [August 7, 2017, 5:50am UTC](https://forum.syncthing.net/t/security-notice-for-v0-14-34/10320/2 "2017-08-07T05:50:21Z")

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### Author: ![ProactiveServices](https://forum.syncthing.net/user_avatar/forum.syncthing.net/proactiveservices/32/2386_2.png) [@ProactiveServices](https://forum.syncthing.net/u/ProactiveServices)
#### Post date: [August 7, 2017, 4:54pm UTC](https://forum.syncthing.net/t/security-notice-for-v0-14-34/10320/3 "2017-08-07T16:54:35Z")

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Anyone still unning Syncthing as root or SYSTEM should take this as a good reason to fix their configurations 🙂

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### Author: ![calmh](https://forum.syncthing.net/user_avatar/forum.syncthing.net/calmh/32/15311_2.png) [@calmh](https://forum.syncthing.net/u/calmh)
#### Post date: [August 7, 2017, 7:04pm UTC](https://forum.syncthing.net/t/security-notice-for-v0-14-34/10320/4 "2017-08-07T19:04:43Z")

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Mmmhm.

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### Author: ![calmh](https://forum.syncthing.net/user_avatar/forum.syncthing.net/calmh/32/15311_2.png) [@calmh](https://forum.syncthing.net/u/calmh)
#### Post date: [August 8, 2017, 6:17am UTC](https://forum.syncthing.net/t/security-notice-for-v0-14-34/10320/5 "2017-08-08T06:17:20Z")

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Please see the note about some Windows installations (you use symlinks and versioning) requiring manual cleanup:

> [@Syncthing v0.14.34^H^H35](https://forum.syncthing.net/t/syncthing-v0-14-34/10324):
>
> [v0.14.3435](https://github.com/syncthing/syncthing/releases/tag/v0.14.35) This is a regularly scheduled stable release unscheduled release in panic mode. Resolved issues: [#2157](https://github.com/syncthing/syncthing/issues/2157): The new folder dialog now suggests a default path. Adjustable via advanced config defaultFolderPath. [#4272](https://github.com/syncthing/syncthing/issues/4272): The build script no longer sets -installsuffix by default. [#4286](https://github.com/syncthing/syncthing/issues/4286): Prevents a vulnerability that allows file overwrite via versioned symlinks Note that the last issue is a security vulnerability. Symlinks on Windows are not supported and have not been created by Syncthin…

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### Author: ![calmh](https://forum.syncthing.net/user_avatar/forum.syncthing.net/calmh/32/15311_2.png) [@calmh](https://forum.syncthing.net/u/calmh)
#### Post date: [September 7, 2017, 6:27am UTC](https://forum.syncthing.net/t/security-notice-for-v0-14-34/10320/6 "2017-09-07T06:27:51Z")

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