CVE-2009-1577: Multiple stack-based buffer overflows in the putstring function in find.c in Cscope before 15.6 allow user-ass

Q: How do I fix CVE-2009-1577?

cscope: upgrade to newer than 15.5. Exact commands for each OS are on this page.

Q: Is CVE-2009-1577 being exploited?

CVE-2009-1577 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-2009-1577 affect?

CVE-2009-1577 affects cscope. Severity is high (CVSS 9.3). Multiple stack-based buffer overflows in the putstring function in find.c in Cscope before 15.6 allow user-assisted remote attackers to execute arbitrary code via a long (1) function name or (2) symbol in a source-code file.

Q: How urgent is CVE-2009-1577?

Priority 61/100. Critical severity; EPSS top 6%: very likely to be exploited; Public exploit reference

This week

HIGH 9.3UPGRADE

CVE-2009-1577 is a high-severity flaw (CVSS 9.3) affecting cscope. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple stack-based buffer overflows in the putstring function in find.c in Cscope before 15.6 allow user-assisted remote attackers to execute arbitrary code via a long (1) function name or (2) symbol in a source-code file.

Why this priority

Critical severity
EPSS top 6%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	9.3 (High)
EPSS exploit chance	7.5% (top 6%)
CISA exploited list	No
Weakness	CWE-119
Published	2009-05-07
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: cscope

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

Am I affected?

Timeline

2009-05-07 17:30 UTCPublished CVE record published
2026-06-16 23:07 UTCUpdated Record last modified

cscope cscope UPGRADE

Affected: <= 15.5 · 13.0 · 15.0bl2 · 15.1 · 15.3 · 15.4

Fixed in: newer than 15.5

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 15.5 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade cscope

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-2009-1577?

cscope: upgrade to newer than 15.5. Exact commands for each OS are on this page.

Is CVE-2009-1577 being exploited?

CVE-2009-1577 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-2009-1577 affect?

CVE-2009-1577 affects cscope. Severity is high (CVSS 9.3). Multiple stack-based buffer overflows in the putstring function in find.c in Cscope before 15.6 allow user-assisted remote attackers to execute arbitrary code via a long (1) function name or (2) symbol in a source-code file.

How urgent is CVE-2009-1577?

Priority 61/100. Critical severity; EPSS top 6%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2009-0148 HIGH 9.3 DOWNGRADE Multiple buffer overflows in Cscope before 15.7a allow remote attackers to execute arbitrary code via long str

References

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