CVE-2007-2769: BES before 3.5.0 in OPeNDAP 4 (Hydrax) before 1.2.1 does not properly handle compressed files, which allows re

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HIGH 7.5UPGRADEDOWNGRADE

CVE-2007-2769 is a high-severity flaw (CVSS 7.5) affecting bes, hyrax. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

BES before 3.5.0 in OPeNDAP 4 (Hydrax) before 1.2.1 does not properly handle compressed files, which allows remote attackers to upload arbitrary files or execute arbitrary commands via a crafted compressed file.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	2.7% (top 14%)
CISA exploited list	No
Published	2007-05-21
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: opendap

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

Am I affected?

Timeline

2007-05-21 20:30 UTCPublished CVE record published
2026-06-16 22:40 UTCUpdated Record last modified

opendap bes UPGRADE

Affected: <= 3.4.2

Fixed in: newer than 3.4.2

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 3.4.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade bes

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade bes

Note

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

opendap hyrax DOWNGRADE

Affected: 1.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.2 (Debian / Ubuntu)

apt-cache madison hyrax sudo apt install hyrax=<VERSION_BEFORE_1.2> sudo apt-mark hold hyrax

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

dnf --showduplicates list hyrax sudo dnf downgrade hyrax-<VERSION_BEFORE_1.2> sudo dnf versionlock add hyrax

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-2007-2769?

bes: upgrade to newer than 3.4.2; hyrax: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2007-2769 being exploited?

CVE-2007-2769 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-2007-2769 affect?

CVE-2007-2769 affects bes, hyrax. Severity is high (CVSS 7.5). BES before 3.5.0 in OPeNDAP 4 (Hydrax) before 1.2.1 does not properly handle compressed files, which allows remote attackers to upload arbitrary files or execute arbitrary commands via a crafted compressed file.

How urgent is CVE-2007-2769?

Priority 48/100. High severity

Related CVEs

CVE-2007-2767 HIGH 7.8 UPGRADE DOWNGRADE Unspecified vulnerability in BES before 3.5.0 in OPeNDAP 4 (Hydrax) before 1.2.1 allows remote attackers to li

References

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