Security readout for executives and security teams
Plain-English summary
This affects devices built with Espressif’s ESP-BLE-MESH stack. A nearby attacker could trigger memory corruption during Bluetooth Mesh provisioning, potentially leading to full device compromise. The vendor recommends upgrading because the problem is in the underlying mesh stack, not application code.
Executive priority
Prioritize remediation for deployed mesh-enabled products, especially devices exposed to untrusted nearby Bluetooth access. This is not internet-reachable by CVSS, but embedded firmware updates can be slow and the potential impact is full device compromise.
Technical view
The flaw is an out-of-bounds write in ESP-IDF’s ESP-BLE-MESH provisioning handling. The stack does not check the SegN field in a Transaction Start PDU, allowing memory buffer corruption. CVSS is 7.5 with adjacent attack vector, high complexity, no privileges, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is likely in embedded or IoT products using ESP-IDF with the ESP-BLE-MESH component on affected 4.1, 4.2, 4.3, or 4.4 branch versions. Devices not using ESP-BLE-MESH are not identified as affected by the provided sources.
Exploitation context
The provided sources do not state active exploitation, and the CVE is not marked KEV. Exploitation requires adjacent Bluetooth reachability and is rated high complexity, but successful exploitation may corrupt memory and potentially give control of the system.
Researcher notes
Focus review on ESP-BLE-MESH provisioning paths and firmware version evidence. The public source identifies SegN validation in Transaction Start PDU handling as the root issue, but does not provide exploit status or a user-level workaround.
Mitigation direction
- Upgrade ESP-IDF/ESP-BLE-MESH to the vendor-patched branch version.
- Rebuild and redeploy firmware for products using ESP-BLE-MESH.
- Do not rely on an application-layer workaround for this stack issue.
- Track Espressif advisory updates for branch-specific patch guidance.
Validation and detection
- Inventory products and firmware using ESP-IDF and ESP-BLE-MESH.
- Compare deployed ESP-IDF versions with the affected version ranges.
- Confirm patched firmware is built from an upgraded ESP-IDF branch.
- Verify Bluetooth Mesh provisioning still works after firmware update.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CWE-787: Exact CWE lookup
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Open ATT&CK lookupCWE-788: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2022-24893 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H1.65.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/espressif/esp-idf/security/advisories/GHSA-7f7f-jj2q-28wmCVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Access of Memory Location After End of Buffer
Access of Memory Location After End of Buffer represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.