VulnerabilityPublished 20 Jan 2026

CVE-2025-1719: IBM Concert · Heap Inspection

Affects IBM ConcertSource CVE Database V5

Not known to be exploited · CVSS 5.9 Medium.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score

5.9Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.3% chance of exploitation in 30 days – higher than 33% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector: Network
Attack Complexity: High
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: None
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: High: A successful attack depends on conditions beyond the attacker's control. That is, a successful attack cannot be accomplished at will, but requires the attacker to invest in some measurable amount of effort in preparation or execution against the vulnerable component before a successful attack can be expected. For example, a successful attack may require an attacker to: gather knowledge about the environment in which the vulnerable target/component exists; prepare the target environment to improve exploit reliability; or inject themselves into the logical network path between the target and the resource requested by the victim in order to read and/or modify network communications (e.g., a man in the middle attack).
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 20 Jan 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
IBMConcert	Affected >=1.0.0 <=2.1.0	Fixed in–

CPE configurations (2)

cpe:2.3:a:ibm:concert:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:concert:2.1.0:*:*:*:*:*:*:*

AI-suggested

Immediately restrict network access to IBM Concert services to trusted internal networks and VPNs to reduce exposure to remote attackers.
Implement strict network segmentation and firewall rules to limit inbound traffic to IBM Concert servers.
Monitor network and application logs for unusual access patterns or attempts to read memory or sensitive data.
Employ endpoint detection and response (EDR) tools to detect anomalous memory access or exploitation attempts.
Engage with IBM support to obtain official patches or workarounds as soon as they are released and prioritize timely patching.
Conduct a thorough inventory of IBM Concert deployments across the organization to identify all affected versions.
Educate system administrators and security teams about the vulnerability specifics and signs of exploitation.
Consider temporary compensating controls such as disabling non-essential features or services within IBM Concert that may expose heap memory.
Perform regular security assessments and penetration tests focusing on memory handling and data leakage risks in IBM Concert environments.
Ensure data encryption at rest and in transit is enforced to minimize the impact of any potential data leakage from memory.

Description

IBM Concert 1.0.0 through 2.1.0 could allow a remote attacker to obtain sensitive information from allocated memory due to improper clearing of heap memory.

Impact

For European organizations, the primary impact of CVE-2025-1719 is the potential exposure of sensitive information stored in heap memory of IBM Concert applications. This could include confidential business data, user credentials, or other sensitive artifacts processed by the software. Such data leakage could lead to intellectual property theft, regulatory non-compliance (e.g., GDPR violations), reputational damage, and potential financial losses. Since IBM Concert is used in sectors like finance, government, and critical infrastructure, the exposure of sensitive data could have cascading effects on operational security and trust. The medium severity rating reflects that while the vulnerability does not directly affect system integrity or availability, the confidentiality breach risk is significant. The lack of authentication requirement increases the attack surface, but the high attack complexity somewhat limits widespread exploitation. European organizations with IBM Concert deployed in multi-tenant or exposed network environments are at higher risk. Additionally, regulatory frameworks in Europe emphasize data protection, so any leakage could trigger legal and compliance consequences.

CWE-244Improper Clearing of Heap Memory Before Release ('Heap Inspection') (opens in a new tab)
Variant weakness
Using realloc() to resize buffers that store sensitive information can leave the sensitive information exposed to attack, because it is not removed from memory.
OWASP ASVS 4.0.3
V8.3.2 (opens in a new tab)
V8.3.6 (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

ibm.com/support/pages/node/7257006 (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

CPE configurations (2)

Description

AI analysisMachine-generated, updated 20 Jan 2026, 16:35 UTC

WeaknessesCWE-244

Technical details

References

Community reviews

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