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11 vulnerabilities
CVE-2026-115793 (GCVE-0-2026-115793)
Vulnerability from cvelistv5 – Published: 2026-10-29 15:44 – Updated: 2026-10-29 15:44
VLAI
EPSS
VEX
Title
Resource exhaustion from RPC sessions kept for requests to unknown interface
Summary
P-Net before 1.0.3 does not release the RPC session allocated for an RPC request that names an unknown interface or object UUID, and does not start a timeout for it. Repeated requests with different activity UUIDs exhaust the available sessions. Once they are exhausted the device no longer answers new RPC requests, including Endpoint Mapper Lookup and Connect, until it is restarted. A remote unauthenticated attacker can use this to cause a denial of service.
Severity
CWE
- CWE-772 - Missing Release of Resource after Effective Lifetime
References
1 reference
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"version": "0",
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}
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}
],
"value": "P-Net before 1.0.3 does not release the RPC session allocated for an RPC request that names an unknown interface or object UUID, and does not start a timeout for it. Repeated requests with different activity UUIDs exhaust the available sessions. Once they are exhausted the device no longer answers new RPC requests, including Endpoint Mapper Lookup and Connect, until it is restarted. A remote unauthenticated attacker can use this to cause a denial of service."
}
],
"metrics": [
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"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
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"vulnerabilityResponseEffort": "NOT_DEFINED"
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"shortName": "rt-labs"
},
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{
"name": "Cybersecurity advisory for P-Net",
"url": "https://rt-labs.com/wp-content/uploads/2026/10/RRTL-261019-01.pdf"
}
],
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"value": "\u003cp\u003eUpgrade to P-Net 1.0.3 or later.\u003c/p\u003e"
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],
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}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Resource exhaustion from RPC sessions kept for requests to unknown interface"
}
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"datePublished": "2026-10-29T15:44:11.697Z",
"dateReserved": "2026-10-23T14:30:04.467Z",
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"state": "PUBLISHED"
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CVE-2026-115794 (GCVE-0-2026-115794)
Vulnerability from cvelistv5 – Published: 2026-10-29 15:43 – Updated: 2026-10-29 15:43
VLAI
EPSS
VEX
Title
Alarm data length not validated against received frame length
Summary
P-Net before 1.0.3 passes the application alarm callback a data length derived from the variable part length field of a received RTA alarm frame without checking it against the length of the received frame. A short frame can make the callback receive a length of up to 65507 bytes. An application that copies the reported number of bytes reads past the end of the receive buffer. The attacker must have established an Application Relationship and requires ADJACENT network access. Applications that do not use the alarm data are not affected.
Severity
CWE
- CWE-130 - Improper Handling of Length Parameter Inconsistency
References
1 reference
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"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
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"type": "finder",
"value": "Aditya Gupta - adi0x90"
}
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}
],
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}
],
"metrics": [
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"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "ADJACENT",
"baseScore": 2.3,
"baseSeverity": "LOW",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "LOW",
"vulnConfidentialityImpact": "LOW",
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"vulnerabilityResponseEffort": "NOT_DEFINED"
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"name": "Cybersecurity advisory for P-Net",
"url": "https://rt-labs.com/wp-content/uploads/2026/10/RRTL-261019-01.pdf"
}
],
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"value": "\u003cp\u003eUpgrade to P-Net 1.0.3 or later.\u003c/p\u003e"
}
],
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}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Alarm data length not validated against received frame length"
}
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},
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}
CVE-2026-115795 (GCVE-0-2026-115795)
Vulnerability from cvelistv5 – Published: 2026-10-29 15:43 – Updated: 2026-10-29 15:43
VLAI
EPSS
VEX
Title
Out-of-bounds read of DCP block header in DCP Set and Identify request parsing
Summary
P-Net before 1.0.3 does not check that a complete block header is present in the received data before reading the next block in DCP Set and Identify requests. If the last block ends at the end of the receive buffer, the block length of the following block is read past the end of the buffer. In addition, a DCP Set block with a length smaller than the two-byte block qualifier makes the length underflow, so the block is processed with a length of 65534 bytes. This can cause a crash (denial of service) or disclose a small amount of memory content. Requires ADJACENT network access.
Severity
CWE
- CWE-125 - Out-of-bounds Read
References
1 reference
{
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"affected": [
{
"defaultStatus": "unaffected",
"product": "P-Net",
"vendor": "RT-Labs",
"versions": [
{
"lessThan": "1.0.3",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Aditya Gupta - adi0x90"
}
],
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"value": "\u003cp\u003eP-Net before 1.0.3 does not check that a complete block header is present in the received data before reading the next block in DCP Set and Identify requests. If the last block ends at the end of the receive buffer, the block length of the following block is read past the end of the buffer. In addition, a DCP Set block with a length smaller than the two-byte block qualifier makes the length underflow, so the block is processed with a length of 65534 bytes. This can cause a crash (denial of service) or disclose a small amount of memory content. Requires ADJACENT network access.\u003c/p\u003e"
}
],
"value": "P-Net before 1.0.3 does not check that a complete block header is present in the received data before reading the next block in DCP Set and Identify requests. If the last block ends at the end of the receive buffer, the block length of the following block is read past the end of the buffer. In addition, a DCP Set block with a length smaller than the two-byte block qualifier makes the length underflow, so the block is processed with a length of 65534 bytes. This can cause a crash (denial of service) or disclose a small amount of memory content. Requires ADJACENT network access."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "ADJACENT",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N",
"version": "4.0",
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"vulnerabilityResponseEffort": "NOT_DEFINED"
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"description": "CWE-125 Out-of-bounds Read",
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]
}
],
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},
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"name": "Cybersecurity advisory for P-Net",
"url": "https://rt-labs.com/wp-content/uploads/2026/10/RRTL-261019-01.pdf"
}
],
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{
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"base64": false,
"type": "text/html",
"value": "\u003cp\u003eUpgrade to P-Net 1.0.3 or later.\u003c/p\u003e"
}
],
"value": "Upgrade to P-Net 1.0.3 or later."
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Out-of-bounds read of DCP block header in DCP Set and Identify request parsing"
}
},
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},
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}
CVE-2026-111736 (GCVE-0-2026-111736)
Vulnerability from cvelistv5 – Published: 2026-10-29 15:43 – Updated: 2026-10-29 15:43
VLAI
EPSS
VEX
Title
NULL pointer dereference on implicit read of user specific record index
Summary
P-Net before 1.0.3 dereferences a NULL AR pointer in pf_fspm_cm_read_ind() when handling an implicit read request without a valid target AR UUID for a user specific record index, if the application has registered a read callback. A remote unauthenticated attacker can send such a request to crash the device (denial of service).
Severity
CWE
- CWE-476 - NULL Pointer Dereference
References
1 reference
{
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"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "P-Net",
"vendor": "RT-Labs",
"versions": [
{
"lessThan": "1.0.3",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
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}
],
"value": "P-Net before 1.0.3 dereferences a NULL AR pointer in pf_fspm_cm_read_ind() when handling an implicit read request without a valid target AR UUID for a user specific record index, if the application has registered a read callback. A remote unauthenticated attacker can send such a request to crash the device (denial of service)."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
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{
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{
"cweId": "CWE-476",
"description": "CWE-476 NULL Pointer Dereference",
"lang": "en",
"type": "CWE"
}
]
}
],
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"url": "https://rt-labs.com/wp-content/uploads/2026/10/RRTL-261019-01.pdf"
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"base64": false,
"type": "text/html",
"value": "\u003cp\u003eUpgrade to P-Net 1.0.3 or later.\u003c/p\u003e"
}
],
"value": "Upgrade to P-Net 1.0.3 or later."
}
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"source": {
"discovery": "UNKNOWN"
},
"title": "NULL pointer dereference on implicit read of user specific record index"
}
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"assignerOrgId": "4b71179a-3b92-4a9d-b9fc-af8b8ed579ee",
"assignerShortName": "rt-labs",
"cveId": "CVE-2026-111736",
"datePublished": "2026-10-29T15:43:11.102Z",
"dateReserved": "2026-10-16T15:50:29.491Z",
"dateUpdated": "2026-10-29T15:43:11.102Z",
"state": "PUBLISHED"
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CVE-2026-112200 (GCVE-0-2026-112200)
Vulnerability from cvelistv5 – Published: 2026-10-29 15:42 – Updated: 2026-10-29 15:42
VLAI
EPSS
VEX
Title
Resource exhaustion from unreleased AR and RPC session on RPC requests with incorrect endianness
Summary
P-Net before 1.0.3 does not release the Application Relationship (AR) and the RPC session when an RPC request is rejected because its data representation has incorrect endianness. The session and its AR remain allocated, so repeated requests exhaust the available sessions. Once they are exhausted the device no longer answers new RPC requests, including Connect, until it is restarted. A remote unauthenticated attacker can use this to cause a denial of service.
Severity
CWE
- CWE-772 - Missing Release of Resource after Effective Lifetime
References
1 reference
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "P-Net",
"vendor": "RT-Labs",
"versions": [
{
"lessThan": "1.0.3",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "JianWeiHuang-stu"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eP-Net before 1.0.3 does not release the Application Relationship (AR) and the RPC session when an RPC request is rejected because its data representation has incorrect endianness. The session and its AR remain allocated, so repeated requests exhaust the available sessions. Once they are exhausted the device no longer answers new RPC requests, including Connect, until it is restarted. A remote unauthenticated attacker can use this to cause a denial of service.\u003c/p\u003e"
}
],
"value": "P-Net before 1.0.3 does not release the Application Relationship (AR) and the RPC session when an RPC request is rejected because its data representation has incorrect endianness. The session and its AR remain allocated, so repeated requests exhaust the available sessions. Once they are exhausted the device no longer answers new RPC requests, including Connect, until it is restarted. A remote unauthenticated attacker can use this to cause a denial of service."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-772",
"description": "CWE-772 Missing Release of Resource after Effective Lifetime",
"lang": "en",
"type": "CWE"
}
]
}
],
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"shortName": "rt-labs"
},
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{
"name": "Cybersecurity advisory for P-Net",
"url": "https://rt-labs.com/wp-content/uploads/2026/10/RRTL-261019-01.pdf"
}
],
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{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eUpgrade to P-Net 1.0.3 or later.\u003c/p\u003e"
}
],
"value": "Upgrade to P-Net 1.0.3 or later."
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Resource exhaustion from unreleased AR and RPC session on RPC requests with incorrect endianness"
}
},
"cveMetadata": {
"assignerOrgId": "4b71179a-3b92-4a9d-b9fc-af8b8ed579ee",
"assignerShortName": "rt-labs",
"cveId": "CVE-2026-112200",
"datePublished": "2026-10-29T15:42:51.513Z",
"dateReserved": "2026-10-19T09:58:42.883Z",
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CVE-2026-111735 (GCVE-0-2026-111735)
Vulnerability from cvelistv5 – Published: 2026-10-29 15:42 – Updated: 2026-10-29 15:42
VLAI
EPSS
VEX
Title
Integer underflow leads to out-of-bounds read in pf_cpm_c_data_ind()
Summary
P-Net before 1.0.3 contains an integer underflow in pf_cpm_c_data_ind(). When handling a received cyclic data frame while the consumer is in the FRUN or RUN state, the offset of the APDU status was computed as the frame length minus 4 using 16-bit arithmetic, without checking that the frame is long enough. A crafted short frame makes the offset wrap around, so the function reads outside the receive buffer. This can cause a crash (denial of service) or disclose memory content.
Severity
References
1 reference
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CVE-2026-111734 (GCVE-0-2026-111734)
Vulnerability from cvelistv5 – Published: 2026-10-29 15:42 – Updated: 2026-10-29 15:42
VLAI
EPSS
VEX
Title
Missing length validation of EtherType, VLAN and FrameID fields in pf_eth_recv()
Summary
P-Net before 1.0.3 does not validate the length of a received Ethernet frame in pf_eth_recv() before reading the EtherType, any VLAN tags and the PROFINET FrameID. The VLAN tag loop had no upper bound, so a truncated frame, or a frame consisting only of VLAN tags, makes the function read past the end of the receive buffer. This can cause a crash (denial of service) or disclose memory content.
Severity
CWE
- CWE-125 - Out-of-bounds Read
References
1 reference
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CVE-2026-111733 (GCVE-0-2026-111733)
Vulnerability from cvelistv5 – Published: 2026-10-29 15:41 – Updated: 2026-10-29 15:41
VLAI
EPSS
VEX
Title
NULL pointer dereference on implicit read of AR specific record index
Summary
P-Net before 1.0.3 dereferences a NULL AR pointer when handling an implicit read request without a valid target AR UUID for a record index that requires an AR (AR specific indices 0xE000-0xEFFF, and the expected identification data of a slot or subslot). A remote unauthenticated attacker can send such a request to crash the device (denial of service).
Severity
CWE
- CWE-476 - NULL Pointer Dereference
References
1 reference
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CVE-2026-111732 (GCVE-0-2026-111732)
Vulnerability from cvelistv5 – Published: 2026-10-29 15:40 – Updated: 2026-10-29 15:40
VLAI
EPSS
VEX
Title
Out-of-bounds write when parsing AR Vendor Block requests
Summary
P-Net before 1.0.3, when built with PNET_OPTION_AR_VENDOR_BLOCKS enabled, parses a data length from a field of the ARVendorBlock request that is not part of the block definition and uses it as the number of bytes to copy into a fixed-size buffer, without comparing it with the buffer size or the block length. A crafted Connect request causes an out-of-bounds write. This can lead to a crash (denial of service) or potentially arbitrary code execution.
This option is disabled by default.
Severity
CWE
- CWE-787 - Out-of-bounds Write
References
1 reference
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"version": "0",
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}
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}
],
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CVE-2026-111731 (GCVE-0-2026-111731)
Vulnerability from cvelistv5 – Published: 2026-10-29 15:39 – Updated: 2026-10-29 15:39
VLAI
EPSS
VEX
Title
Infinite loop when reading PDPortDataCheck record of subslot 0
Summary
P-Net before 1.0.3 enters an infinite loop when handling a read request for the PDPortDataCheck record with subslot 0 (whole module). The loop over the ports never advanced to the next port, so the request never completes and the device stops responding. A remote unauthenticated attacker can use this to cause a denial of service.
Severity
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
References
1 reference
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"version": "0",
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}
],
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}
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}
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}
],
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"discovery": "UNKNOWN"
},
"title": "Infinite loop when reading PDPortDataCheck record of subslot 0"
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"assignerShortName": "rt-labs",
"cveId": "CVE-2026-111731",
"datePublished": "2026-10-29T15:39:02.066Z",
"dateReserved": "2026-10-16T15:49:35.515Z",
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CVE-2026-111730 (GCVE-0-2026-111730)
Vulnerability from cvelistv5 – Published: 2026-10-29 15:37 – Updated: 2026-10-29 15:37
VLAI
EPSS
VEX
Title
Out-of-bounds write in CheckPeers block parser due to unvalidated peer station name length
Summary
P-Net before 1.0.3 does not validate the LengthPeerStationName field of a CheckPeers block in get_check_peer(). The received length (up to 255) was used to copy data into the 241-byte peer station name buffer and to place the terminating NUL byte, so a crafted block writes up to 15 bytes past the end of the buffer. This can lead to a crash (denial of service) or potentially arbitrary code execution.
Requires establishment of session that needs ADJACENT network access.
Severity
CWE
- CWE-787 - Out-of-bounds Write
References
1 reference
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