CVE-2026-21925VulnerabilityPublished 30 Jan 2026Updated 16 Sep 2026

SUSE · Security update for java-25-openjdk

Affects SUSESource GCVE Database

Mentioned vulnerabilities

Authoritative record:CVE-2026-21925· Medium 4.8

Not known to be exploited · CVSS 4.8 Medium.

Data as of 26 Oct 2026, 08:30 UTC

CVSS base score

4.8Medium

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

EPSS: 0.2% chance of exploitation in 30 days – higher than 16% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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 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
Oracle CorporationOracle Java SE	Affected =8u471 =8u471-b50 =8u471-perf =11.0.29 =17.0.17 =21.0.9 =25.0.1	Fixed in–
Oracle CorporationOracle GraalVM for JDK	Affected =17.0.17 =21.0.9	Fixed in–
Oracle CorporationOracle GraalVM Enterprise Edition	Affected =21.3.16	Fixed in–
Mavencom.oracle/java-se`pkg:maven/com.oracle/java-se`Other threats	Affected =11.0.29 =17.0.17 =21.0.9 =25.0.1	Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Red Hat has released updated java-1.8.0-openjdk packages that address these vulnerabilities. Users should apply the security update RHSA-2026:0931 for Red Hat Enterprise Linux 7 Extended Lifecycle Support. Before applying this update, ensure all previously released errata relevant to the system have been applied. Detailed instructions for applying the update are available on Red Hat's official documentation. No additional mitigation steps are indicated by the vendor advisory.

Description

This update for java-25-openjdk fixes the following issues: Update to upstream tag jdk-25.0.2+10 (January 2026 CPU) Security fixes: - CVE-2026-21925: Fixed Oracle Java SE component RMI (bsc#1257034). - CVE-2026-21932: Fixed Oracle Java SE component AWT and JavaFX (bsc#1257036). - CVE-2026-21933: Fixed Oracle Java SE component Networking (bsc#1257037). - CVE-2026-21945: Fixed Oracle Java SE component Security (bsc#1257038). Other fixes: - Do not depend on update-desktop-files (jsc#PED-14507, jsc#PED-15221).

Impact

The vulnerabilities impact the security of Java Management Extensions (JMX) connections, HTTP server request handling, and certificate validation within OpenJDK 8 on Red Hat Enterprise Linux 7 ELS. These issues could potentially allow attackers to exploit weaknesses in these components, affecting the integrity and security of Java applications running on the affected systems. The advisory does not report any known exploits in the wild at this time.

Summary

This security advisory from Red Hat addresses three vulnerabilities in the java-1.8.0-openjdk packages for Red Hat Enterprise Linux 7 Extended Lifecycle Support. The vulnerabilities are identified as CVE-2026-21925 (improving JMX connections), CVE-2026-21933 (improving HttpServer request handling), and CVE-2026-21945 (enhancing certificate checking). These issues affect the OpenJDK 8 Java Runtime Environment and Software Development Kit. Red Hat has released updated packages to fix these vulnerabilities as part of their January 2026 security update. The advisory rates the update as important and recommends applying the update after ensuring all previous errata are applied.

CWE-322Key Exchange without Entity Authentication (opens in a new tab)
Base weaknessLikelihood of exploit: HighOWASP Top 10 A04:2025: Cryptographic Failures (opens in a new tab)
The product performs a key exchange with an actor without verifying the identity of that actor.
Architecture and Design
Ensure that proper authentication is included in the system design.
Implementation
Understand and properly implement all checks necessary to ensure the identity of entities involved in encrypted communications.
OWASP Cheat Sheets
Transport Layer Protection (opens in a new tab)
User Privacy Protection (opens in a new tab)
Password Storage (opens in a new tab)
Cryptographic Storage (opens in a new tab)
HSTS (opens in a new tab)
OWASP ASVS 4.0.3
V1.2.3 (opens in a new tab)
V1.2.2 (opens in a new tab)
V1.2.4 (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).
CWE-93Improper Neutralization of CRLF Sequences ('CRLF Injection') (opens in a new tab)
Base weaknessOWASP Top 10 A05:2025: Injection (opens in a new tab)
The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs.
Implementation
Avoid using CRLF as a special sequence.
Implementation
Appropriately filter or quote CRLF sequences in user-controlled input.
OWASP Cheat Sheets
Abuse Case (opens in a new tab)
Deserialization (opens in a new tab)
Injection Prevention (opens in a new tab)
SQL Injection Prevention (opens in a new tab)
Injection Prevention in Java (opens in a new tab)
OWASP ASVS 4.0.3
V1.5.1 (opens in a new tab)
Attack patterns
Command Delimiters (opens in a new tab)
Web Server Logs Tampering (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).
CWE-295Improper Certificate Validation (opens in a new tab)
Base weaknessOWASP Top 10 A07:2025: Authentication Failures (opens in a new tab)
The product does not validate, or incorrectly validates, a certificate.
Architecture and Design · Implementation
Certificates should be carefully managed and checked to assure that data are encrypted with the intended owner's public key.
Implementation
If certificate pinning is being used, ensure that all relevant properties of the certificate are fully validated before the certificate is pinned, including the hostname.
OWASP Cheat Sheets
Transport Layer Protection (opens in a new tab)
TLS Cipher String (opens in a new tab)
OWASP Authentication (opens in a new tab)
OWASP ASVS 4.0.3
V9.2.1 (opens in a new tab)
V1.9.2 (opens in a new tab)
V2.8.5 (opens in a new tab)
Attack patterns
Creating a Rogue Certification Authority Certificate (opens in a new tab)
Signature Spoofing by Improper Validation (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).
CWE-1287Improper Validation of Specified Type of Input (opens in a new tab)
Base weakness
The product receives input that is expected to be of a certain type, but it does not validate or incorrectly validates that the input is actually of the expected type.
Implementation · Input Validation
Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
OWASP Cheat Sheets
XML Security (opens in a new tab)
Mass Assignment (opens in a new tab)
OWASP ASVS 4.0.3
V13.3.1 (opens in a new tab)
V5.1.4 (opens in a new tab)
V5.1.3 (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 9 Jul 2026, 10:58 UTC

WeaknessesCWE-322, CWE-93, CWE-295 +1

Technical details

References

Community reviews

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