CVE-2009-0187: Stack-based buffer overflow in Orbit Downloader 2.8.2 and 2.8.3, and possibly other versions before 2.8.5, all

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HIGH 9.3DOWNGRADE

CVE-2009-0187 is a high-severity flaw (CVSS 9.3) affecting orbit downloader. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stack-based buffer overflow in Orbit Downloader 2.8.2 and 2.8.3, and possibly other versions before 2.8.5, allows remote attackers to execute arbitrary code via a crafted HTTP URL with a long host name, which is not properly handled when constructing a "Connecting" log message.

Why this priority

Critical severity
EPSS top 1%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	9.3 (High)
EPSS exploit chance	40.0% (top 1%)
CISA exploited list	No
Weakness	CWE-119
Published	2009-02-26
Last modified	2026-06-16

Publisher (CNA): Flexera Software LLC · Vendor: orbitdownloader

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2009-02-26 16:17 UTCPublished CVE record published
2026-06-16 23:04 UTCUpdated Record last modified

orbitdownloader orbit downloader DOWNGRADE

Affected: 2.8.2 · 2.8.3 · 2.8.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.8.2

1. Check installed version

apt-cache policy orbit-downloader || rpm -q orbit-downloader || orbit-downloader --version

2. No fixed release: DOWNGRADE to a release before 2.8.2 (Debian / Ubuntu)

apt-cache madison orbit-downloader sudo apt install orbit-downloader=<VERSION_BEFORE_2.8.2> sudo apt-mark hold orbit-downloader

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

dnf --showduplicates list orbit-downloader sudo dnf downgrade orbit-downloader-<VERSION_BEFORE_2.8.2> sudo dnf versionlock add orbit-downloader

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Orbit Downloader - Connecting Log Creation Buffer Overflow (Metasploit)
Exploit-DB: Orbit Downloader 2.8.4 - 'Hostname' Remote Buffer Overflow
Metasploit: Orbit Downloader Connecting Log Creation Buffer Overflow

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-2009-0187?

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

Is CVE-2009-0187 being exploited?

CVE-2009-0187 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-2009-0187 affect?

CVE-2009-0187 affects orbit downloader. Severity is high (CVSS 9.3). Stack-based buffer overflow in Orbit Downloader 2.8.2 and 2.8.3, and possibly other versions before 2.8.5, allows remote attackers to execute arbitrary code via a crafted HTTP URL with a long host name, which is not properly handled when co

How urgent is CVE-2009-0187?

Priority 62/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference

Related CVEs

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CVE-2009-1064 MEDIUM 5.8 DOWNGRADE UPGRADE Argument injection vulnerability in orbitmxt.dll 2.1.0.2 in the Orbit Downloader 2.8.7 and earlier ActiveX con
CVE-2008-1602 HIGH 10.0 DOWNGRADE Stack-based buffer overflow in Orbit downloader 2.6.3 and 2.6.4 allows remote attackers to execute arbitrary c

References

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