EUVD-2025-210992
GHSA-75pq-gw98-rfmh
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
-
AccessReach network-facing Concert endpoint
-
DeliverySubmit crafted regex/malicious input
-
ExploitTrigger catastrophic regex backtracking
-
ExecutionExhaust CPU/memory resources
-
ImpactDegrade service availability
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V2 - Validation and Business Logic Resource allocation limits
MITRE ATT&CK
1 technique across 1 tactic: Impact The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | Requires network reachability to an IBM Concert instance (version 1.0.0 through 3.0.0) that processes attacker-supplied input through the vulnerable regular-expression handling; no authentication (PR:N) and no user interaction (UI:N) are needed per the CVSS vector. The practical limiting factors are the narrow deployment footprint of IBM Concert and the bounded impact - only availability is affected (A:L), meaning degradation rather than full outage or data compromise. Exploitation is realistic only against instances that expose the affected input-processing surface to the attacker. |
| Impact | This is a genuine but low-priority issue. The vendor CVSS of 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L) is internally consistent with the description: a remote, unauthenticated attacker can trigger the flaw with low complexity and no user interaction, but the only impact is limited availability degradation (A:L) - no confidentiality or integrity loss. The CWE-770 (uncontrolled resource consumption) plus the 'specially crafted regular expression causing excessive resource consumption' language points to a classic ReDoS (regular-expression denial of service). No EPSS score, no CISA KEV listing, and no public POC were provided, so exploitation status is 'no public exploit identified at time of analysis' - this is a targeted-effort DoS rather than a mass-exploited or automatable threat. There is no SSVC decision data in the input. Net: real network-reachable DoS but bounded impact (A:L, not A:H), a niche product, and no known exploitation make this a low real-world priority - patch on normal maintenance cadence rather than emergency. |
| Exploit ScenarioDerived | A remote unauthenticated attacker submits a specially crafted input containing a pathological regular expression (or input that a vulnerable regex engine processes) to an internet- or network-reachable IBM Concert endpoint, causing catastrophic backtracking and excessive CPU/memory consumption. Sustained or repeated requests degrade responsiveness of the Concert service for legitimate users. No public exploit code was identified at the time of analysis. |
Get an e-mail when this CVE is exploited, patched or re-scored. Free account.
Alert meAnalysisAIv1 – Sep 22, 2026
Uncontrolled resource consumption in IBM Concert 1.0.0 through 3.0.0 allows a remote, unauthenticated attacker to degrade service availability by feeding a specially crafted regular expression through the affected input-processing path, causing excessive CPU and memory consumption. Per the CVSS vector (AV:N/AC:L/PR:N/UI:N, availability impact Low only), no credentials or user interaction are required, but the practical blast radius is bounded: only availability is affected, so expect slowdowns or partial unavailability rather than data compromise or full host takeover, and only on Concert deployments that actually expose the vulnerable input surface to untrusted traffic. No public exploit code has been identified at time of analysis and there is no indication this issue is confirmed actively exploited (CISA KEV); the vendor has published a fix advisory, making this a genuine but low-priority patching item.
RemediationAI
IBM has published a vendor fix; consult the advisory at https://www.ibm.com/support/pages/node/7288830 for the exact patched release and upgrade path, since the provided data confirms a patch is available from the vendor but does not specify a fix version number - do not assume a version beyond what that advisory states. Until the upgrade is applied, the most effective compensating controls are to restrict network reachability to the IBM Concert interface so that only trusted administrative networks and users can reach the input-processing endpoints (for example via reverse proxy allow-listing or network ACLs), and to front-end the service with a WAF or reverse proxy configured with request body size limits, per-IP/per-route rate limiting, and aggressive short timeouts - the trade-off is that overly tight limits can throttle legitimate bulk or automated API traffic. Where the deployment allows it, disabling or blocking the specific feature or endpoint that accepts the attacker-supplied input removes the exposure entirely, at the cost of losing that functionality. Monitoring for sustained CPU saturation or worker-thread exhaustion triggered by a small number of requests provides an early indicator if preventive controls are bypassed.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
The root cause class is CWE-770, Allocation of Resources Without Limits or Throttling, realized here as a classic regular-expression denial-of-service (ReDoS) pattern: attacker-supplied input is evaluated against a regex whose backtracking behavior grows super-linearly (typically catastrophic backtracking from nested quantifiers or ambiguous alternation), so a short crafted string can pin a worker thread and consume disproportionate CPU and memory. Because the resource is not bounded by a timeout, complexity limit, or input length cap, repeated requests can accumulate and starve legitimate request handling. The affected component is the regular-expression handling within IBM Concert, IBM's AI-driven application and infrastructure operations platform; the CPE string cpe:2.3:a:ibm:concert:*:*:*:*:*:*:*:* indicates the CPE definition does not pin a specific version, so version scoping must come from the vendor advisory, which covers releases 1.0.0 through 3.0.0. The CVSS vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L describes a remotely reachable flaw with no authentication or user interaction required, no scope change, and only Low availability impact - consistent with service degradation that recovers once the malicious input stops, rather than persistent denial of service.
Know when Concert gets its next vulnerability
- Watch products and get an email when something new is published
- Check this CVE against your own stack and servers
- Exploit and PoC references, threat intelligence from 22 sources
No credit card · 7-day full trial
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Remote unauthenticated low-complexity input triggers ReDoS with no UI; impact limited to partial availability degradation (A:L), no confidentiality or integrity effect.
Primary rating from Vendor (ibm).
CVSS VectorVendor: ibm
DescriptionCVE.org
IBM Concert 1.0.0 through 3.0.0 could allow a remote attacker to cause a denial of service using a specially crafted regular expression that would cause excessive resource consumption.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Vulnrichment
VulDB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Unauthenticated remote code execution in IBM Concert 1.0.0 through 3.0.0 lets any attacker who can reach the service sen
Use-after-free in IBM Concert 1.0.0 through 3.0.0 lets an attacker who can influence program input or execution flow cor
IBM Concert Software 1.0.0, 1.0.1, 1.0.2, and 1.0.2.1 is vulnerable to SQL injection. Rated critical severity (CVSS 9.8)
IBM Concert 1.0.0 and 1.0.1 vulnerable to attacks that rely on the use of cookies without the SameSite attribute. Rated
Improperly scoped role-based access control in IBM Concert 1.0.0 through 3.0.0 lets any authenticated user holding even
SQL injection in IBM Concert versions 1.0.0 through 2.3.1 allows remote attackers to inject specially crafted SQL statem
Concert versions up to 2.1.0 is affected by unrestricted upload of file with dangerous type (CVSS 8.8).
IBM Concert Software 1.0.0, 1.0.1, 1.0.2, and 1.0.2.1 could allow an authenticated user to perform unauthorized actions
Improper bounds checking in IBM Concert 1.0.0 through 3.0.0 lets a local, authenticated user supply overlong input that
Local code execution in IBM Concert 1.0.0 through 2.1.0 allows an authenticated attacker to overflow a stack buffer and
Local privilege escalation in IBM Concert 1.0.0 through 3.0.0 lets an attacker who already holds a low-privileged accoun
Heap memory corruption in IBM Concert 1.0.0 through 3.0.0 lets an attacker who already has low-privileged local access t
Exploit-DB