CVE-2020-9406: IBL Online Weather before 4.3.5a allows unauthenticated eval injection via the queryBCP method of the Auxiliar

Q: How do I fix CVE-2020-9406?

online weather: upgrade to 4.3.5. Exact commands for each OS are on this page.

Q: Is CVE-2020-9406 being exploited?

CVE-2020-9406 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-9406 affect?

CVE-2020-9406 affects online weather. Severity is critical (CVSS 9.8). IBL Online Weather before 4.3.5a allows unauthenticated eval injection via the queryBCP method of the Auxiliary Service.

Q: How urgent is CVE-2020-9406?

Priority 57/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2020-9406 is a critical-severity flaw (CVSS 9.8) affecting online weather. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

IBL Online Weather before 4.3.5a allows unauthenticated eval injection via the queryBCP method of the Auxiliary Service.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.2% (top 31%)
CISA exploited list	No
Weakness	CWE-94
Published	2020-02-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: iblsoft

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

Am I affected?

Timeline

2020-02-26 00:15 UTCPublished CVE record published
2026-06-17 03:27 UTCUpdated Record last modified

iblsoft online weather UPGRADE

Affected: < 4.3.5

Fixed in: 4.3.5

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy online-weather || rpm -q online-weather || online-weather --version

2. UPGRADE to 4.3.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade online-weather

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade online-weather

Note

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

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-2020-9406?

online weather: upgrade to 4.3.5. Exact commands for each OS are on this page.

Is CVE-2020-9406 being exploited?

CVE-2020-9406 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-2020-9406 affect?

CVE-2020-9406 affects online weather. Severity is critical (CVSS 9.8). IBL Online Weather before 4.3.5a allows unauthenticated eval injection via the queryBCP method of the Auxiliary Service.

How urgent is CVE-2020-9406?

Priority 57/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2020-9407 MEDIUM 5.3 UPGRADE IBL Online Weather before 4.3.5a allows attackers to obtain sensitive information by reading the IWEBSERVICE_J
CVE-2020-9405 MEDIUM 6.1 UPGRADE IBL Online Weather before 4.3.5a allows unauthenticated reflected XSS via the redirect page.

References

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