CVE-2025-2900: IBM Semeru Runtime 8.0.302.0 through 8.0.442.0, 11.0.12.0 through 11.0.26.0, 17.0.0.0 through 17.0.14.0, and 2

Routine

HIGH 7.5REMOTEUPGRADE

CVE-2025-2900 is a high-severity flaw (CVSS 7.5) affecting semeru runtime. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

IBM Semeru Runtime 8.0.302.0 through 8.0.442.0, 11.0.12.0 through 11.0.26.0, 17.0.0.0 through 17.0.14.0, and 21.0.0.0 through 12.0.6.0 is vulnerable to a denial of service caused by a buffer overflow and subsequent crash, due to a defect in its native AES/CBC encryption implementation.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-122, CWE-787
Published	2025-05-14
Last modified	2026-06-17

Publisher (CNA): IBM Corporation · Vendor: ibm

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-05-14 19:15 UTCPublished CVE record published
2026-06-17 09:07 UTCUpdated Record last modified

ibm semeru runtime UPGRADE

Affected: >= 8.0.302.0 and <= 8.0.442.0 · >= 11.0.12.0 and <= 11.026.0 · >= 17.0.0.0 and <= 17.0.14.0 · >= 21.0.0.0 and <= 21.0.6.0

Fixed in: newer than 21.0.6.0

Safe to downgrade to: a release before 8.0.302.0

1. Check installed version

apt-cache policy semeru-runtime || rpm -q semeru-runtime || semeru-runtime --version

2. UPGRADE to newer than 21.0.6.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade semeru-runtime

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade semeru-runtime

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 8.0.302.0 (Debian / Ubuntu)

apt-cache madison semeru-runtime sudo apt install semeru-runtime=<VERSION_BEFORE_8.0.302.0> sudo apt-mark hold semeru-runtime

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list semeru-runtime sudo dnf downgrade semeru-runtime-<VERSION_BEFORE_8.0.302.0> sudo dnf versionlock add semeru-runtime

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-2900?

semeru runtime: upgrade to newer than 21.0.6.0. Exact commands for each OS are on this page.

Is CVE-2025-2900 being exploited?

CVE-2025-2900 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-2900 affect?

CVE-2025-2900 affects semeru runtime. Severity is high (CVSS 7.5). IBM Semeru Runtime 8.0.302.0 through 8.0.442.0, 11.0.12.0 through 11.0.26.0, 17.0.0.0 through 17.0.14.0, and 21.0.0.0 through 12.0.6.0 is vulnerable to a denial of service caused by a buffer overflow and subsequent crash, due to a defect in

How urgent is CVE-2025-2900?

Priority 36/100. High severity; Remotely exploitable, no login, no user action

References

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