Evidence used
- No CISA KEV confirmation is currently recorded.
- The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
- EPSS is 0.33% for the current model date.
BlackTreeCVE IntelligenceFull vulnerability report · 2025
CVE-2025-7677High confidence
DOS attack possible
ABB · Aspect
8.2HighCVSS 4.0
Within 7 days
Fix not verifiedHigh 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
- Restrict the affected network interface to trusted sources where business-safe.
- Monitor vendor guidance and exploitation sources for a material change.
Verification
- Confirm that the asset runs ABB Aspect and falls inside the recorded affected range.
- Recheck the vendor advisory before scheduling a change because no verified fixed version is currently retained.
- 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.
9AKK108471A4462 · CSAF 2.0 · revision 6 · finalABB Product Security Incident Response Team (PSIRT)CVE-2025-7677
The vendor explicitly identifies these products as affected by this CVE.
- ASP-ENT-x version<3.08.04-s01
- NEX-2x version <3.08.04-s01
- NEXUS-3-x version<3.08.04-s01
- MAT-x version <3.08.04-s01
- Summary
- A DoS attack is possible if access to the local network is provided to unauthorized users. This issue affects all versions of ASPECT <3.08.04-s01
- Remediation
- No plans of corrective measures. The vulnerabilities reported in scope of this document are only exploitable if attackers can access the network segment where ASPECT is installed and exposed directly to the internet. ABB therefore recommends the following guidelines to protect customer networks: • ASPECT devices should never be exposed directly to the Internet either via a direct ISP connection nor via NAT port forwarding. If remote access to an ASPECT system is a customer requirement, the system shall operate behind a firewall. Users accessing ASPECT remotely shall do this using a VPN Gateway allowing access to the network segment where ASPECT is installed and configured • Note: it is crucial that the VPN Gateway and Network is set up in accordance with best industry standards and maintained in terms of security patches for all related components • Authorized users shall change all default credentials during commissioning of an ASPECT system. If credentials have not been changed during commission state, ABB advises to change each changeable credential at the earliest • Ensure that all ASPECT products are upgraded to the latest firmware version. Please find the latest version of ASPECT firmware on the respective product homepage
High technical severity; prioritise exposed affected systems while verifying vendor guidance.
Fix not verified01
What, why and how
A denial-of-service (DoS) attack is possible if access to the local network is provided to unauthorized users. This is due to a buffer copy issue that may lead to a software crash. This issue affects all versions of ASPECT.
What
A denial-of-service (DoS) attack is possible if access to the local network is provided to unauthorized users. This is due to a buffer copy issue that may lead to a software crash. This issue affects all versions of ASPECT.
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 a network path may attempt exploitation without authentication or user interaction. If successful, the issue may disrupt the affected service.
What
A denial-of-service (DoS) attack is possible if access to the local network is provided to unauthorized users. This is due to a buffer copy issue that may lead to a software crash. This issue affects all versions of ASPECT.
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 a network path may attempt exploitation without authentication or user interaction. If successful, the issue may disrupt the affected service.
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
- a network path → Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') → disrupt the affected service
- Attack surface
- Network
- Privileges required
- None: unauthenticated exploitation is possible
- User interaction
- None
- Attack complexity
- High: exploitation depends on specific conditions
- Security boundary
- Not a CVSS 4.0 base metric
- 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:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NCommon Vulnerability Scoring System 4.0: the compact vector below is decoded into plain language.
AVNetworkAttack vector: The vulnerable component can be reached over a network.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.ATNoneAttack requirements: No additional deployment or execution condition is required.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.VCNoneVulnerable-system confidentiality: No direct loss is represented by this metric.VINoneVulnerable-system integrity: No direct loss is represented by this metric.VAHighVulnerable-system availability: A successful attack can cause a major loss.SCNoneSubsequent-system confidentiality: No direct loss is represented by this metric.SINoneSubsequent-system integrity: No direct loss is represented by this metric.SANoneSubsequent-system availability: No direct loss is represented by this metric.- Post-exploitation / living off the land
- No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
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. - Fix not verified
- Affected
- ASP-ENT-x version<3.08.04-s01
- NEX-2x version <3.08.04-s01
- NEXUS-3-x version<3.08.04-s01
- MAT-x version <3.08.04-s01
- Fixed
- No fixed version is explicitly recorded in the structured CVE data.
- Action
- No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
- Workaround
- No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04
Evidence and provenance
Published 11 Aug 2025 · Last source change 8 Sept 2025, 15:14 UTC · CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CVE recordCVE.org · 5.1
CVSS sourceCNA
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-2025-24165
Product sourceVendor CSAF · ABB Product Security Incident Response Team (PSIRT)
Remediation sourceVendor CSAF · ABB Product Security Incident Response Team (PSIRT)
CWE sourceCNA
NVD statusNVD not scheduled
Core structured fields are present and their contributing authorities are shown above.
Material change intelligence
View recent updates ↗What changed after publication
- Vendor guidanceAuthoritative vendor guidance changed: added remediation: search.abb.com/Download.aspx?DocumentID=9AKK108471A4462&LanguageCode=en&DocumentPartId=pdf&Action=Launch; removed remediation: nvd.nist.gov/CVE-2025-76772.ABB Product Security Incident Response Team (PSIRT) ↗
- Before
- remediation: nvd.nist.gov/CVE-2025-76772
- After
- remediation: search.abb.com/Download.aspx?DocumentID=9AKK108471A4462&LanguageCode=en&DocumentPartId=pdf&Action=Launch
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.