CVE-2025-46354VulnerabilityPublished 22 Jul 2025Updated 3 Nov 2025

CVE-2025-46354: Bloomberg Comdb2 · Reachable Assertion

Affects Bloomberg Comdb2Source CVE Database V5

Not known to be exploited · CVSS 7.5 High.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score

7.5High

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

EPSS: 0.8% chance of exploitation in 30 days – higher than 58% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

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

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: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
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: None: There is no loss of confidentiality within the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: High: There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 22 Jul 2025
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 2026-10-26.

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 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
Bloomberg Comdb2	Affected =8.1	Fixed in–

AI-suggested

1. Immediately restrict network access to Bloomberg Comdb2 services by implementing strict firewall rules and network segmentation, allowing only trusted hosts and internal networks to communicate with the Comdb2 service port. 2. Deploy intrusion detection/prevention systems (IDS/IPS) with custom signatures or anomaly detection rules to identify and block malformed packets targeting the Distributed Transaction Commit/Abort functionality. 3. Monitor network traffic and Comdb2 service logs for unusual activity or repeated failed transaction operations that could indicate exploitation attempts. 4. Coordinate with Bloomberg for timely patch releases and plan for rapid deployment once available. 5. Consider implementing rate limiting on transaction commit/abort requests to reduce the risk of triggering the assertion failure through high-volume malicious traffic. 6. Conduct a thorough inventory of all Comdb2 deployments within the organization to ensure no exposed instances remain unprotected. 7. Engage in incident response readiness to quickly isolate affected systems if a DoS attack occurs. 8. Review and enhance backup and recovery procedures to minimize downtime impact in case of service disruption.

Description

A denial of service vulnerability exists in the Distributed Transaction Commit/Abort Operation functionality of Bloomberg Comdb2 8.1. A specially crafted network packet can lead to a denial of service. An attacker can send a malicious packet to trigger this vulnerability.

Impact

For European organizations, particularly those in the financial sector relying on Bloomberg Comdb2 8.1, this vulnerability poses a significant risk of service disruption. A successful DoS attack could interrupt transaction processing, leading to operational downtime, financial losses, and potential regulatory compliance issues related to service availability. The impact is heightened in environments where Comdb2 is integrated into critical infrastructure or real-time financial systems. Additionally, the inability to process distributed transaction commits or aborts reliably could cascade into broader system instability. Since the vulnerability requires no authentication and can be triggered remotely, attackers from anywhere could target exposed Comdb2 instances. This risk is especially relevant for organizations with insufficient network segmentation or those exposing Comdb2 services to the internet or untrusted networks. The lack of a patch increases the urgency for interim mitigations to maintain service continuity and protect business operations.

CWE-617Reachable Assertion (opens in a new tab)
Base weakness
The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.
Implementation
Make sensitive open/close operation non reachable by directly user-controlled data (e.g. open/close resources)
Implementation · Input Validation
Perform input validation on user data.
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

Loading reviews…

Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 4 Nov 2025, 01:26 UTC

WeaknessesCWE-617

Technical details

References

Community reviews

Related threats