CVE-2025-70085: An issue was discovered in OpenSatKit 2.2.1

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2025-70085 is a critical-severity flaw (CVSS 9.8) affecting opensatkit. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in OpenSatKit 2.2.1. The EventErrStr buffer has a fixed size of 256 bytes. The code uses sprintf to format two filenames (Source1Filename and the string returned by FileUtil_FileStateStr) into this buffer without any length checking and without using bounded format specifiers such as %.*s. If the filename length approaches OS_MAX_PATH_LEN (commonly 64-256 bytes), the combined formatted string together with constant text ca

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 51%)
CISA exploited list	No
Weakness	CWE-121
Published	2026-02-11
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: opensatkit

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

Am I affected?

Timeline

2026-02-11 18:16 UTCPublished CVE record published
2026-06-17 10:03 UTCUpdated Record last modified

opensatkit opensatkit DOWNGRADE

Affected: 2.2.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.2.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.2.1 (Debian / Ubuntu)

apt-cache madison opensatkit sudo apt install opensatkit=<VERSION_BEFORE_2.2.1> sudo apt-mark hold opensatkit

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

dnf --showduplicates list opensatkit sudo dnf downgrade opensatkit-<VERSION_BEFORE_2.2.1> sudo dnf versionlock add opensatkit

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-2025-70085?

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

Is CVE-2025-70085 being exploited?

CVE-2025-70085 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-2025-70085 affect?

CVE-2025-70085 affects opensatkit. Severity is critical (CVSS 9.8). An issue was discovered in OpenSatKit 2.2.1. The EventErrStr buffer has a fixed size of 256 bytes. The code uses sprintf to format two filenames (Source1Filename and the string returned by FileUtil_FileStateStr) into this buffer without any

How urgent is CVE-2025-70085?

Priority 52/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-70084 HIGH 7.5 DOWNGRADE Directory traversal vulnerability in OpenSatKit 2.2.1 allows attackers to gain access to sensitive information
CVE-2025-70083 HIGH 7.8 DOWNGRADE An issue was discovered in OpenSatKit 2.2.1

References

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