How severe is CVE-2026-4243?

CVE-2026-4243 has a CVSS 3.x base score of 2.5, rated low severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-4243 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-4243?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-4243 have an EU (EUVD) identifier?

Yes. CVE-2026-4243 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-12449.

When was CVE-2026-4243 published?

CVE-2026-4243 was published on 2026-03-16 and last updated on 2026-06-17.

CVE-2026-4243

CVE-2026-4243 is a low-severity vulnerability with a CVSS 3.x base score of 2.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-255.

Key facts

Severity: Low (CVSS 3.x base score 2.5)
CVSS v2: 1.0
CVSS v4: 1.1
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-12449
Weakness: CWE-255
Published: 2026-03-16
Last modified: 2026-06-17

Description

A weakness has been identified in La Nacion App 10.2.25 on Android. This impacts an unknown function of the file source/app/lanacion/clublanacion/BuildConfig.java of the component app.lanacion.activity. Executing a manipulation of the argument API_KEY_WEBSOCKET_CV can lead to unprotected storage of credentials. The attack can only be executed locally. A high complexity level is associated with this attack. The exploitability is said to be difficult. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2026-4243?: A weakness has been identified in La Nacion App 10.2.25 on Android. This impacts an unknown function of the file source/app/lanacion/clublanacion/BuildConfig.java of the component app.lanacion.activity. Executing a manipulation of the argument API_KEY_WEBSOCKET_CV can lead to unprotected storage of credentials. The attack can only be executed locally. A high complexity level is associated with this attack. The exploitability is said to be difficult. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2026-4243?: CVE-2026-4243 has a CVSS 3.x base score of 2.5, rated low severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-4243 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-4243?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-4243 have an EU (EUVD) identifier?: Yes. CVE-2026-4243 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-12449.
When was CVE-2026-4243 published?: CVE-2026-4243 was published on 2026-03-16 and last updated on 2026-06-17.

References

Other CWE-255 (Credentials Management Errors) vulnerabilities

CVE-2016-0898 — Critical (CVSS 10.0): MySQL for PCF tiles 1.7.x before 1.7.10 were discovered to log the AWS access key in plaintext. These credentials were…
CVE-2015-7906 — Critical (CVSS 10.0): LOYTEC LIP-3ECTB 6.0.1, LINX-100, LVIS-3E100, and LIP-ME201 devices allow remote attackers to read a password-hash…
CVE-2015-7856 — Critical (CVSS 10.0): OpenNMS has a default password of rtc for the rtc account, which makes it easier for remote attackers to obtain access…
CVE-2014-9736 — Critical (CVSS 10.0): GE Healthcare Centricity Clinical Archive Audit Trail Repository has a default password of initinit for the (1) SSL key…
CVE-2014-7233 — Critical (CVSS 10.0): GE Healthcare Precision THUNIS-800+ has a default password of (1) 1973 for the factory default System Utilities menu,…
CVE-2014-7232 — Critical (CVSS 10.0): GE Healthcare Discovery XR656 and XR656 G2 has a password of (1) 2getin for the insite user, (2) 4$xray for the xruser…

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