CVE-2023-50716 [Critical] | Use-After-Free in Fast Dds

eProsima Fast DDS (formerly Fast RTPS) is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.13.0, 2.12.2, 2.11.3, 2.10.3, and 2.6.7, an invalid DATA_FRAG Submessage causes a bad-free error, and the Fast-DDS process can be remotely terminated. If an invalid Data_Frag packet is sent, the `Inline_qos, SerializedPayload` member of object `ch` will attempt to release memory without initialization, resulting in a 'bad-free' error. Versions 2.13.0, 2.12.2, 2.11.3, 2.10.2, and 2.6.7 fix this issue.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-03-25	1.12%	1.26%	+0.13%
2	2026-01-23	0.94%	1.12%	+0.19%
3	2025-11-21	—	0.94%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-03-25

1.12%

1.26%

+0.13%

2026-01-23

0.94%

1.12%

+0.19%

2025-11-21

—

0.94%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
9.6	3.1	CRITICAL	`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H` Click to expand Attack vector (AV:A) Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:C) Breaking this can reach past the original component and bite other resources—bigger blast radius. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	2.8	6.0	[email protected]
9.8	3.1	CRITICAL	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	3.9	5.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

9.6

3.1

CRITICAL

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Click to expand

Attack vector (AV:A): Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C): Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

2.8

6.0

[email protected]

9.8

3.1

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

3.9

5.9

[email protected]

OS Trackers for CVE-2023-50716

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2023-50716 not yet assigned priority: Debian including 1 source packages (fastdds), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 3, open 2.	https://security-tracker.debian.org/tracker/CVE-2023-50716
`ubuntu`	medium	CVE-2023-50716 medium priority: Ubuntu including 1 source packages (fastdds), 8 status rows across 8 suites (focal, jammy, mantic, noble, oracular, plucky, questing, upstream): ignored 3, needs-triage 3, DNE 1, released 1.	https://ubuntu.com/security/CVE-2023-50716

Affected software / configurations for CVE-2023-50716

Vendor	Product	Version	Raw CPE
eprosima	fast_dds	< 2.6.7	cpe:2.3:a:eprosima:fast_dds::::::::
eprosima	fast_dds	>= 2.10.0, < 2.10.3	cpe:2.3:a:eprosima:fast_dds::::::::
eprosima	fast_dds	>= 2.11.0, < 2.11.3	cpe:2.3:a:eprosima:fast_dds::::::::
eprosima	fast_dds	>= 2.12.0, < 2.12.2	cpe:2.3:a:eprosima:fast_dds::::::::

References for CVE-2023-50716

URL	Tags
https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-5m2f-hvj2-cx2h	Vendor Advisory

URL

CVE-2023-50716 | Invalid DATA_FRAG Submessage causes a bad-free error

Exploit prediction scoring system (EPSS) score for CVE-2023-50716

Common vulnerability scoring system (CVSS) metrics for CVE-2023-50716

Weakness enumeration for CVE-2023-50716

OS Trackers for CVE-2023-50716

Affected software / configurations for CVE-2023-50716

References for CVE-2023-50716