CVE-2025-14308: An integer overflow vulnerability exists in the write method of the Buffer class in Robocode version 1.9.3.6

This month

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2025-14308 is a critical-severity flaw (CVSS 9.8) affecting robocode. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An integer overflow vulnerability exists in the write method of the Buffer class in Robocode version 1.9.3.6. The method fails to properly validate the length of data being written, allowing attackers to cause an overflow, potentially leading to buffer overflows and arbitrary code execution. This vulnerability can be exploited by submitting specially crafted inputs that manipulate the data length, leading to potential unauthorized code execution.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-190
Published	2025-12-09
Last modified	2026-10-15

Publisher (CNA): Government Technology Agency of Singapore Cyber Security Group (GovTech CSG) · Vendor: robocode

Last updated 2026-10-15 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-09 16:17 UTCPublished CVE record published
2026-10-15 19:10 UTCUpdated Record last modified

robocode robocode DOWNGRADE

Affected: 1.9.3.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.9.3.6

1. Check installed version

apt-cache policy robocode || rpm -q robocode || robocode --version

2. No fixed release: DOWNGRADE to a release before 1.9.3.6 (Debian / Ubuntu)

apt-cache madison robocode sudo apt install robocode=<VERSION_BEFORE_1.9.3.6> sudo apt-mark hold robocode

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list robocode sudo dnf downgrade robocode-<VERSION_BEFORE_1.9.3.6> sudo dnf versionlock add robocode

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-2025-14308?

robocode: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-14308 being exploited?

CVE-2025-14308 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-2025-14308 affect?

CVE-2025-14308 affects robocode. Severity is critical (CVSS 9.8). An integer overflow vulnerability exists in the write method of the Buffer class in Robocode version 1.9.3.6. The method fails to properly validate the length of data being written, allowing attackers to cause an overflow, potentially leadi

How urgent is CVE-2025-14308?

Priority 51/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-14306 CRITICAL 9.1 DOWNGRADE A directory traversal vulnerability exists in the CacheCleaner component of Robocode version 1.9.3.6
CVE-2025-14307 HIGH 8.1 DOWNGRADE An insecure temporary file creation vulnerability exists in the AutoExtract component of Robocode version 1.9.

References

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