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CVE-2007-5243: Multiple stack-based buffer overflows in Borland InterBase LI 8.0.0.53 through 8.1.0.253, and WI 5.1.1.680 thr

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HIGH 9.3DOWNGRADE

CVE-2007-5243 is a high-severity flaw (CVSS 9.3) affecting interbase. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple stack-based buffer overflows in Borland InterBase LI 8.0.0.53 through 8.1.0.253, and WI 5.1.1.680 through 8.1.0.257, allow remote attackers to execute arbitrary code via (1) a long service attach request on TCP port 3050 to the (a) SVC_attach or (b) INET_connect function, (2) a long create request on TCP port 3050 to the (c) isc_create_database or (d) jrd8_create_database function, (3) a long attach request on TCP port 3050 to the (e) is

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 score9.3 (High)
EPSS exploit chance40.1% (top 1%)
CISA exploited listNo
WeaknessCWE-119
Published2007-10-06
Last modified2026-06-16
Publisher (CNA): MITRE · Vendor: borland software

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

Am I affected?

Timeline

borland software interbase DOWNGRADE
Affected: li_8.0.0.53 · li_8.0.0.54 · li_8.0.0.253 · wi-o6.0.1.6 · wi-o6.0.2.0 · wi-v5.1.1.680 · wi-v5.5.0.742 · wi-v6.0.0.627
Fixed in: no fixed release known
Safe to downgrade to: a release before li_8.0.0.53
1. Check installed version
apt-cache policy interbase || rpm -q interbase || interbase --version
2. No fixed release: DOWNGRADE to a release before li_8.0.0.53 (Debian / Ubuntu)
apt-cache madison interbase sudo apt install interbase=<VERSION_BEFORE_li_8.0.0.53> sudo apt-mark hold interbase
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list interbase sudo dnf downgrade interbase-<VERSION_BEFORE_li_8.0.0.53> sudo dnf versionlock add interbase
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.

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-2007-5243?

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

Is CVE-2007-5243 being exploited?

CVE-2007-5243 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-2007-5243 affect?

CVE-2007-5243 affects interbase. Severity is high (CVSS 9.3). Multiple stack-based buffer overflows in Borland InterBase LI 8.0.0.53 through 8.1.0.253, and WI 5.1.1.680 through 8.1.0.257, allow remote attackers to execute arbitrary code via (1) a long service attach request on TCP port 3050 to the (a)

How urgent is CVE-2007-5243?

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

Related CVEs

References

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