Evidence used
- No CISA KEV confirmation is currently recorded.
- EPSS is 2.82% for the current model date.
BlackTreeCVE IntelligenceFull vulnerability report · 2022
CVE-2022-22723High confidence
n/a Easergy P5 (All firmware versions prior to V01.401.101) — Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Unknown · Easergy P5 (All firmware versions prior to V01.401.101)
8.8HighCVSS 3.1
Within 7 days
Patch availableHigh technical severity; prioritise exposed affected systems while verifying vendor guidance.
R
Open reassessment dashboard →Operational reassessment
Published severity in operational context
Published severityHigh→Operational priority:High, unchanged from published severity.unchanged
Compensating controls
- Validate the affected product branch and deploy the verified fixed release.
- Restrict local access and enforce least privilege on affected hosts.
- Monitor vendor guidance and exploitation sources for a material change.
Verification
- Confirm that the asset runs Unknown Easergy P5 (All firmware versions prior to V01.401.101) and falls inside the recorded affected range.
- Verify the installed build against the product-specific fixed version after deployment.
- Validate exposure, authentication requirements and compensating controls in the actual environment.
- Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Direct vendor intelligence
1 currentAuthoritative vendor CSAF and VEX advisories
Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.
SEVD-2022-011-03 · CSAF 2.0 · revision 1.1.0 · finalSchneider Electric CPCERTEasergy P5
The vendor explicitly identifies these products as affected by this CVE.
- Schneider Electric Easergy P5 < 01.401.101
- Summary
- A CWE-120: Buffer Copy without Checking Size of Input vulnerability exists that could lead to a buffer overflow causing program crashes and arbitrary code execution when specially crafted packets are sent to the device over the network. Protection functions and tripping function via GOOSE can be impacted.
- Remediation
- Versions 01.401.101 and 01.303.202 of the Easergy P5 Firmware include a fix for these vulnerabilities. The version to be used depends on the existing firmware in the Easergy P5. The firmware packages are available on request from Schneider Electric’s Customer Care Center which will provide the guidelines on the version to be used.
High technical severity; prioritise exposed affected systems while verifying vendor guidance.
Patch available01
What, why and how
A CWE-120: Buffer Copy without Checking Size of Input vulnerability exists that could lead to a buffer overflow causing program crashes and arbitrary code execution when specially crafted packets are sent to the device over the network. Protection functions and tripping function via GOOSE can be impacted. Affected Product: Easergy P5 (All firmware versions prior to V01.401.101)
What
A CWE-120: Buffer Copy without Checking Size of Input vulnerability exists that could lead to a buffer overflow causing program crashes and arbitrary code execution when specially crafted packets are sent to the device over the network. Protection functions and tripping function via GOOSE can be impacted. Affected Product: Easergy P5 (All firmware versions prior to V01.401.101)
Why
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
How
An attacker operating through the affected interface may attempt exploitation without authentication or user interaction. If successful, the issue may execute code or commands in the affected security context.
What
A CWE-120: Buffer Copy without Checking Size of Input vulnerability exists that could lead to a buffer overflow causing program crashes and arbitrary code execution when specially crafted packets are sent to the device over the network. Protection functions and tripping function via GOOSE can be impacted. Affected Product: Easergy P5 (All firmware versions prior to V01.401.101)
Why
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
How
An attacker operating through the affected interface may attempt exploitation without authentication or user interaction. If successful, the issue may execute code or commands in the affected security context.
02
Exploit reality and attack path
CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.
Observed exploitation No confirmed evidence
?
Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.
Public PoC / exploit material None recorded
?
Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.
- Likely attack path
- the affected interface → Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') → execute code or commands in the affected security context
- Attack surface
- Unspecified
- Privileges required
- None: unauthenticated exploitation is possible
- User interaction
- None
- Attack complexity
- Low: no specialised conditions are recorded
- Security boundary
- Unchanged: impact remains within the vulnerable component's security authority
- Weakness
?
CWE means Common Weakness Enumeration: a standard category for the underlying weakness. - CWE-120 ↗
CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'). The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
- CVSS vector
?
CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity. CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCommon Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
AVAdjacentAttack vector: The attacker must be on an adjacent or logically close network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.- Post-exploitation / living off the land
- After compromise, an attacker may use built-in shells, scripting engines, scheduled tasks and native network utilities for discovery, persistence or movement. This is a plausible LoTL path, not evidence that it has occurred for every attack.
03
Patch and workaround
Operational remediation based on structured source evidence.
- Status
?
Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change. - Patch available
- Action
- Versions 01.401.101 and 01.303.202 of the Easergy P5 Firmware include a fix for these vulnerabilities. The version to be used depends on the existing firmware in the Easergy P5. The firmware packages are available on request from Schneider Electric’s Customer Care Center which will provide the guidelines on the version to be used.
- Workaround
- No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04
Evidence and provenance
Published 4 Feb 2022 · Last source change 3 Aug 2024, 03:21 UTC · CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
EPSS source FIRST · tracked since 2026-08-14
?
The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.European sourceENISA EUVD · EUVD-2022-27866
Product sourceVendor CSAF · Schneider Electric CPCERT
Remediation sourceVendor CSAF · Schneider Electric CPCERT
CWE sourceCNA
NVD statusNVD modified after enrichment
Missing structured fields: affected product. Missing data is not evidence of low risk; review the primary advisory.
Material change intelligence
View recent updates ↗What changed after publication
- Affected versionsThe structured affected or fixed version information changed.Schneider Electric CPCERT ↗
- Before
- Easergy P5 (All firmware versions prior to V01.401.101) · Fixed: No fixed version is explicitly recorded in the structured CVE data.
- After
- Easergy P5 (All firmware versions prior to V01.401.101) · Fixed: Versions 01.401.101 and 01.303.202 of the Easergy P5 Firmware include a fix for these vulnerabilities. The version to be used depends on the existing firmware in the Easergy P5. The firmware packages are available on request from Schneider Electric’s Customer Care Center which will provide the guidelines on the version to be used.
- Remediation statusRemediation status changed from Awaiting fix to Patch available.Schneider Electric CPCERT ↗
- Before
- Awaiting fix
- After
- Patch available
CVE published
Fixed release recorded from official guidance
Technical terms and abbreviations used in this report
- CVE
- Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
- CVSS
- Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
- EPSS
- Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
- CWE
- Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
- CNA
- CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
- CISA ADP
- Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
- NVD
- National Vulnerability Database: NIST's enrichment service for CVE records.
- CERT / CSIRT
- A computer security incident response team that publishes warnings or coordinates incident response.
- PoC
- Proof of concept: public material that demonstrates or helps reproduce exploitation.
- CSAF
- Common Security Advisory Framework: a machine-readable format for security advisories.
- LoTL
- Living off the land: abuse of legitimate tools or system functions during an attack.