CVE-2026-10848
- Source
- https://cve.org/CVERecord?id=CVE-2026-10848
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-10848.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-10848
- Aliases
-
- GHSA-jgqq-7mjj-w642
- Published
- 2026-08-02T16:12:18.887Z
- Modified
- 2026-08-04T09:25:37.974539Z
- Severity
-
- 7.0 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H CVSS Calculator
- Summary
- Out-of-bounds read in Zephyr OCPP 1.6 RPC message parser (parse_rpc_msg)
- Details
-
The OCPP 1.6 client in subsys/net/lib/ocpp parsed inbound WAMP RPC frames in parserpcmsg() (subsys/net/lib/ocpp/ocppj.c) using a hand-rolled helper, extractstringfield(), that copied the message's uid and action fields with strncpy(outbuf, token + 1, outlen - 1) and then scanned the result with strchr(outbuf, '"'). Because strncpy does not NUL-terminate the destination when the source is at least outlen - 1 (127) bytes long, the subsequent strchr reads past the 128-byte destination buffer into adjacent stack memory; if a " byte is found beyond the buffer, a one-byte out-of-bounds NUL write also occurs. A related defect in extractpayload() runs strchr/strrchr over the receive buffer, which may not be NUL-terminated when a maximal-length frame fills it.
The parsed bytes come directly from the OCPP central-system server over a websocket: the reader thread fills recvbuf via websocketrecvmsg() and calls parserpc_msg() on each inbound DATA frame (subsys/net/lib/ocpp/ocpp.c). A malicious or compromised central server, or an on-path attacker (OCPP is commonly deployed over plain ws://), can send an RPC frame whose uid or action field is 127+ bytes with no closing quote, triggering the out-of-bounds access.
The primary impact is a remotely triggerable denial of service: the unbounded scan can fault on an unmapped page, and the stray NUL write can corrupt adjacent stack state. The over-read data is not reflected to the peer, so disclosure is limited. The feature is EXPERIMENTAL and must be explicitly enabled (CONFIGOCPP). The fix replaces the manual parser with the bounds-respecting jsonmixedarrparse() and copies the extracted uid with an explicitly NUL-terminated buffer, eliminating both over-reads.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10848.json", "cna_assigner": "zephyr", "unresolved_ranges": [ { "extracted_events": [ { "introduced": "4.3.0" }, { "fixed": "4.5.0" } ], "source": "AFFECTED_FIELD" } ], "cwe_ids": [ "CWE-125", "CWE-787" ] }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10848.json
- https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-jgqq-7mjj-w642
- https://nvd.nist.gov/vuln/detail/CVE-2026-10848
- https://github.com/zephyrproject-rtos/zephyr/commit/e500f7b81b5b8a867e28b2f4e59512cbfdd5ae75
- https://github.com/zephyrproject-rtos/zephyr
Affected packages
Git / github.com/zephyrproject-rtos/zephyr
Affected versions
v1.*
v1.0.0
v1.1.0
v1.1.0-rc1
v1.10.0
v1.10.0-rc1
v1.10.0-rc2
v1.10.0-rc3
v1.11.0
v1.11.0-rc1
v1.11.0-rc2
v1.11.0-rc3
v1.12.0
v1.12.0-rc1
v1.12.0-rc2
v1.12.0-rc3
v1.13.0
v1.13.0-rc1
v1.13.0-rc2
v1.13.0-rc3
v1.14.0
v1.14.0-rc1
v1.14.0-rc2
v1.14.0-rc3
v1.2.0
v1.2.0-rc1
v1.2.0-rc2
v1.3.0
v1.3.0-rc1
v1.3.0-rc2
v1.4.0
v1.4.0-rc1
v1.4.0-rc2
v1.4.0-rc3
v1.5.0
v1.5.0-rc0
v1.5.0-rc1
v1.5.0-rc2
v1.5.0-rc3
v1.5.0-rc4
v1.6.99
v1.7.99
v1.8.99
v1.9.0
v1.9.0-rc1
v1.9.0-rc2
v1.9.0-rc3
v1.9.0-rc4
v2.*
v2.0.0
v2.0.0-rc1
v2.0.0-rc2
v2.0.0-rc3
v2.1.0
v2.1.0-rc1
v2.1.0-rc2
v2.1.0-rc3
v2.2.0
v2.2.0-rc1
v2.2.0-rc2
v2.2.0-rc3
v2.3.0
v2.3.0-rc1
v2.3.0-rc2
v2.4.0
v2.4.0-rc1
v2.4.0-rc2
v2.4.0-rc3
v2.5.0
v2.5.0-rc1
v2.5.0-rc2
v2.5.0-rc3
v2.5.0-rc4
v2.6.0
v2.6.0-rc1
v2.6.0-rc2
v2.6.0-rc3
v2.7.0-rc1
v2.7.0-rc2
v2.7.0-rc3
v2.7.99
v3.*
v3.0.0
v3.0.0-rc1
v3.0.0-rc2
v3.0.0-rc3
v3.1.0
v3.1.0-rc1
v3.1.0-rc2
v3.1.0-rc3
v3.2.0
v3.2.0-rc1
v3.2.0-rc2
v3.2.0-rc3
v3.3.0
v3.3.0-rc1
v3.3.0-rc2
v3.3.0-rc3
v3.4.0
v3.4.0-rc1
v3.4.0-rc2
v3.4.0-rc3
v3.5.0
v3.5.0-rc1
v3.5.0-rc2
v3.5.0-rc3
v3.6.0
v3.6.0-rc1
v3.6.0-rc2
v3.6.0-rc3
v3.7.0
v3.7.0-rc1
v3.7.0-rc2
v3.7.0-rc3
v4.*
v4.0.0
v4.0.0-rc1
v4.0.0-rc2
v4.0.0-rc3
v4.1.0
v4.1.0-rc1
v4.1.0-rc2
v4.1.0-rc3
v4.2.0
v4.2.0-rc1
v4.2.0-rc2
v4.2.0-rc3
v4.3.0
v4.3.0-rc1
v4.3.0-rc2
v4.3.0-rc3
v4.4.0
v4.4.0-rc1
v4.4.0-rc2
v4.4.0-rc3
zephyr-v1.*
zephyr-v1.0.0
zephyr-v1.1.0
zephyr-v1.10.0
zephyr-v1.11.0
zephyr-v1.12.0
zephyr-v1.13.0
zephyr-v1.14.0
zephyr-v1.2.0
zephyr-v1.3.0
zephyr-v1.4.0
zephyr-v1.5.0
zephyr-v1.9.0
zephyr-v2.*
zephyr-v2.0.0
zephyr-v2.1.0
zephyr-v2.2.0
zephyr-v2.3.0
zephyr-v2.4.0
zephyr-v2.5.0
zephyr-v2.6.0
zephyr-v3.*
zephyr-v3.0.0
zephyr-v3.1.0
zephyr-v3.2.0
zephyr-v3.3.0
zephyr-v3.4.0
zephyr-v3.5.0
Database specific
vanir_signatures_modified
"2026-08-04T09:25:37Z"
vanir_signatures
[
{
"signature_version": "v1",
"target": {
"file": "subsys/net/lib/ocpp/ocpp_j.c"
},
"id": "CVE-2026-10848-893b8611",
"signature_type": "Line",
"deprecated": false,
"digest": {
"threshold": 0.9,
"line_hashes": [
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"29404258155594921420863585235660807187",
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"326548357129920873029102183060481158216",
"43467285114959774847932347826768769929",
"255901780994441918446871007139958154773",
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"331603108021948014029666525370742223611",
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"133977349371889064865558258301499708542",
"271775705843071630477810370770642186733",
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"85676877444849135681821407901617589440",
"271481345761410943738392063800319253838",
"5825648653571406824270787216462446067",
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"214559761740647290803622357701460968213",
"305701982363245698790397550388247344805",
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"330554448668397652256124752571112931794",
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"288283362116363732843000501418189394558",
"265734145861107883218109930290098490521",
"80437260415104662931338156903006379845",
"188668048723937876591477467278855014905",
"80618651955192485529472322179986525307",
"225513748954715692486285488039428818984",
"27554295354530265383496727121125359253",
"180990837329717262326634368465443467973",
"133111026504523893735465330067962821678",
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"238868111528539466930055708355667675318",
"50113668430765857201893694078975937355",
"314353636891203934034678522666127135740",
"43036194104861270457224963076286564827",
"187795727910485156479574534870067493271",
"209049396300741396488290979183097235695",
"268081932286107350996322633113319418508",
"130426510452190948665784314451885112816",
"156986264222689139391010250850635503314",
"300892873732457872066839435815183546233",
"191642143504324750233237155283416762884",
"102121938517773023208327722074850051627",
"158288056299695688888156820836062811771",
"43036194104861270457224963076286564827",
"332807671619583524196183216534871262841",
"315499016097737799055793541957665823983",
"229463464419087176236272487296298485468",
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"272968329612976420452288720170171114604",
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"305964654261768679779556595185499450422",
"60696793995521300571106006667748511581",
"73299225385345852874093853608600493713",
"286259058570221711743839933575108017794",
"205843041542374602702690274246688701161",
"239718653409973693298686696127245800738",
"298176824356441214070682504711865561728",
"210851135041723581427453439533773949555"
]
},
"source": "https://github.com/zephyrproject-rtos/zephyr/commit/e500f7b81b5b8a867e28b2f4e59512cbfdd5ae75"
},
{
"signature_version": "v1",
"target": {
"file": "subsys/net/lib/ocpp/ocpp_j.c",
"function": "parse_rpc_msg"
},
"id": "CVE-2026-10848-a249b390",
"signature_type": "Function",
"deprecated": false,
"digest": {
"function_hash": "231815830535940567576203922281309218555",
"length": 1136.0
},
"source": "https://github.com/zephyrproject-rtos/zephyr/commit/e500f7b81b5b8a867e28b2f4e59512cbfdd5ae75"
},
{
"signature_version": "v1",
"target": {
"file": "subsys/net/lib/ocpp/ocpp_j.c",
"function": "extract_payload"
},
"id": "CVE-2026-10848-a2e8d5e7",
"signature_type": "Function",
"deprecated": false,
"digest": {
"function_hash": "130032429423911987656395845579603573288",
"length": 351.0
},
"source": "https://github.com/zephyrproject-rtos/zephyr/commit/e500f7b81b5b8a867e28b2f4e59512cbfdd5ae75"
},
{
"signature_version": "v1",
"target": {
"file": "subsys/net/lib/ocpp/ocpp_j.h"
},
"id": "CVE-2026-10848-a3b4a21d",
"signature_type": "Line",
"deprecated": false,
"digest": {
"threshold": 0.9,
"line_hashes": [
"259365633339181686245821660512866564633"
]
},
"source": "https://github.com/zephyrproject-rtos/zephyr/commit/e500f7b81b5b8a867e28b2f4e59512cbfdd5ae75"
},
{
"signature_version": "v1",
"target": {
"file": "subsys/net/lib/ocpp/ocpp_j.c",
"function": "extract_string_field"
},
"id": "CVE-2026-10848-fd5a9b88",
"signature_type": "Function",
"deprecated": false,
"digest": {
"function_hash": "153024857381383173874046574663558044692",
"length": 274.0
},
"source": "https://github.com/zephyrproject-rtos/zephyr/commit/e500f7b81b5b8a867e28b2f4e59512cbfdd5ae75"
}
]
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-10848.json"