VulnerabilityPublished 25 Mar 2026

CVE-2026-1262: IBM InfoSphere Information Server · Generation of Error Message Containing Sensitive Information

Affects IBM InfoSphere Information ServerSource CVE Database V5

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Not known to be exploited · CVSS 4.3 Medium.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score

4.3Medium

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

EPSS: 0.2% chance of exploitation in 30 days – higher than 15% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Confidentiality: Low
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: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
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: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
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 25 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 30 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.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), 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
IBMInfoSphere Information Server	Affected >=11.7.0.0 <=11.7.1.6	Fixed in–

CPE configurations (2)

cpe:2.3:a:ibm:infosphere_information_server:11.7.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:infosphere_information_server:11.7.1.6:*:*:*:*:*:*:*

AI-suggested

Restrict access to IBM InfoSphere Information Server instances to trusted and authorized personnel only, minimizing the number of users with privileges that could exploit this vulnerability.
Implement strict access controls and monitor user activities to detect any unusual or unauthorized access attempts.
Review and sanitize error handling configurations to ensure that error messages do not expose sensitive information; consider customizing error messages to be generic and non-informative.
Monitor system and application logs for any indications of information leakage or suspicious error message patterns.
Stay informed about IBM security advisories and apply patches or updates promptly once they become available for this vulnerability.
Conduct internal security assessments and penetration tests focusing on error message handling and information disclosure risks within InfoSphere environments.
Employ network segmentation and firewall rules to limit exposure of InfoSphere servers to only necessary network segments and trusted hosts.
Educate administrators and developers on secure coding and error handling best practices to prevent similar issues in future deployments.

Description

IBM InfoSphere Information Server 11.7.0.0 through 11.7.1.6 is affected by an information disclosure vulnerability.

Impact

The primary impact of CVE-2026-1262 is the potential disclosure of sensitive information through error messages generated by IBM InfoSphere Information Server. This leakage can provide attackers with valuable insights into system configurations, internal processes, or security mechanisms, which can be leveraged to craft more effective attacks or escalate privileges. While the vulnerability does not directly compromise data integrity or system availability, the confidentiality breach can undermine organizational security postures, especially in environments handling sensitive or regulated data. Organizations relying on InfoSphere for critical data integration and processing may face increased risk of targeted attacks if this vulnerability is exploited. The requirement for some level of privileges to exploit the vulnerability somewhat limits the attack surface but does not eliminate risk, particularly in environments with multiple users or insufficient access controls. The absence of known exploits in the wild reduces immediate risk but does not preclude future exploitation attempts.

CWE-209Generation of Error Message Containing Sensitive Information (opens in a new tab)
Base weaknessLikelihood of exploit: HighOWASP Top 10 A10:2025: Mishandling of Exceptional Conditions (opens in a new tab)
The product generates an error message that includes sensitive information about its environment, users, or associated data.
Implementation
Ensure that error messages only contain minimal details that are useful to the intended audience and no one else. The messages need to strike the balance between being too cryptic (which can confuse users) or being too detailed (which may reveal more than intended).
Implementation
Handle exceptions internally and do not display errors containing potentially sensitive information to a user.
Implementation · Attack Surface Reduction
Use naming conventions and strong types to make it easier to spot when sensitive data is being used. When creating structures, objects, or other complex entities, separate the sensitive and non-sensitive data as much as possible.
OWASP Cheat Sheets
Error Handling (opens in a new tab)
Logging (opens in a new tab)
OWASP ASVS 4.0.3
V8.3.4 (opens in a new tab)
V14.3.3 (opens in a new tab)
V7.3.3 (opens in a new tab)
Attack patterns
Fuzzing for application mapping (opens in a new tab)
Padding Oracle Crypto Attack (opens in a new tab)
Query System for Information (opens in a new tab)
Blind SQL Injection (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

ibm.com/support/pages/node/7266748 (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 25 Mar 2026, 20:47 UTC

WeaknessesCWE-209

Technical details

References

Community reviews

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