CVE-2025-27840: Espressif ESP32 vulnerability
Espressif · ESP32
Affected: Espressif ESP32 · Exploitation: possible (1 to 10%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 72% of scored CVEs
DescriptionCVE.org
Espressif ESP32 chips allow 29 hidden HCI commands, such as 0xFC02 (Write memory).
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Espressif · ESP322025-03-06
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Possible (1 to 10%). EPSS between 1% and 10%.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Espressif
- Published
- March 2025
CoverageNo articles yet
No CyberSIXT article names CVE-2025-27840 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.
References
- NVD entrynvd.nist.gov
- CVE recordcve.org
- Weakness CWE-912cwe.mitre.org
- github.com/TarlogicSecurity/Talks/blob/main/2025_RootedCon_Bluetgithub.com
- x.com/pascal_gujer/status/1898442439704158276x.com
- tarlogic.com/news/backdoor-esp32-chip-infect-ot-devicestarlogic.com
- bleepingcomputer.com/news/security/undocumented-backdoor-found-ibleepingcomputer.com
- reg.rootedcon.com/cfp/schedule/talk/5reg.rootedcon.com
- flyingpenguin.com/?p=67838flyingpenguin.com
- github.com/em0gi/CVE-2025-27840github.com
- github.com/orgs/espruino/discussions/7699github.com
- bleepingcomputer.com/news/security/undocumented-commands-found-ibleepingcomputer.com
- darkmentor.com/blog/esp32_non-backdoordarkmentor.com
- news.ycombinator.com/item?id=43308740news.ycombinator.com
- news.ycombinator.com/item?id=43301369news.ycombinator.com
3 more references are in the CVE record.