CVE-2023-39130: GNU gdb (GDB) 13.0.50.20220805-git was discovered to contain a heap buffer overflow via the function pe_as16()

Routine

MEDIUM 5.5DOWNGRADE

CVE-2023-39130 is a medium-severity flaw (CVSS 5.5) affecting gdb. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

GNU gdb (GDB) 13.0.50.20220805-git was discovered to contain a heap buffer overflow via the function pe_as16() at /gdb/coff-pe-read.c.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 84%)
CISA exploited list	No
Weakness	CWE-787
Published	2023-07-25
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: gnu

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

Am I affected?

Timeline

2023-07-25 19:15 UTCPublished CVE record published
2026-06-17 06:11 UTCUpdated Record last modified

gnu gdb DOWNGRADE

Affected: 13.0.50.20220805-git

Fixed in: no fixed release known

Safe to downgrade to: a release before 13.0.50.20220805-git

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 13.0.50.20220805-git (Debian / Ubuntu)

apt-cache madison gdb sudo apt install gdb=<VERSION_BEFORE_13.0.50.20220805-git> sudo apt-mark hold gdb

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

dnf --showduplicates list gdb sudo dnf downgrade gdb-<VERSION_BEFORE_13.0.50.20220805-git> sudo dnf versionlock add gdb

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-2023-39130?

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

Is CVE-2023-39130 being exploited?

CVE-2023-39130 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-2023-39130 affect?

CVE-2023-39130 affects gdb. Severity is medium (CVSS 5.5). GNU gdb (GDB) 13.0.50.20220805-git was discovered to contain a heap buffer overflow via the function pe_as16() at /gdb/coff-pe-read.c.

How urgent is CVE-2023-39130?

Priority 23/100. No elevated risk signals yet.

Software pages

Git vulnerabilities

Related CVEs

CVE-2023-39128 MEDIUM 5.5 DOWNGRADE GNU gdb (GDB) 13.0.50.20220805-git was discovered to contain a stack overflow via the function ada_decode at /
CVE-2019-1010180 HIGH 7.8 UPGRADE MITIGATE GNU gdb All versions is affected by: Buffer Overflow - Out of bound memory access
CVE-2023-39129 MEDIUM 5.5 DOWNGRADE GNU gdb (GDB) 13.0.50.20220805-git was discovered to contain a heap use after free via the function add_pe_exp
CVE-2017-9778 MEDIUM 5.5 UPGRADE GNU Debugger (GDB) 8.0 and earlier fails to detect a negative length field in a DWARF section

References

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