CVE-2024-38303 [Medium] | Input Validation Bypass in Emc Xc Core Xcxr2 Firmware

Dell PowerEdge Platform, 14G Intel BIOS version(s) prior to 2.22.x, contains an Improper Input Validation vulnerability. A high privileged attacker with local access could potentially exploit this vulnerability, leading to Information disclosure.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.03%	0.14%	+0.11%
2	2025-10-07	0.08%	0.03%	-0.05%
3	2025-10-06	—	0.08%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.03%

0.14%

+0.11%

2025-10-07

0.08%

0.03%

-0.05%

2025-10-06

—

0.08%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
5.3	3.1	MEDIUM	`CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. Attack complexity (AC:H) Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work. Privileges required (PR:H) They need powerful rights—admin, root, or similar—before this pays off. 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:N) Data isn’t meaningfully altered or forged. Availability (A:N) Service keeps running; no real outage angle.	0.8	4.0	[email protected]
6.0	3.1	MEDIUM	`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. 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:H) They need powerful rights—admin, root, or similar—before this pays off. 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:N) Data isn’t meaningfully altered or forged. Availability (A:N) Service keeps running; no real outage angle.	1.5	4.0	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

5.3

3.1

MEDIUM

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

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H): Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:H): They need powerful rights—admin, root, or similar—before this pays off.
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:N): Data isn’t meaningfully altered or forged.
Availability (A:N): Service keeps running; no real outage angle.

0.8

4.0

[email protected]

6.0

3.1

MEDIUM

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

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
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:H): They need powerful rights—admin, root, or similar—before this pays off.
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:N): Data isn’t meaningfully altered or forged.
Availability (A:N): Service keeps running; no real outage angle.

1.5

4.0

[email protected]

Affected software / configurations for CVE-2024-38303

Vendor	Product	Version	Raw CPE
dell	emc_xc_core_xcxr2_firmware	< 2.22.1	cpe:2.3:o:dell:emc_xc_core_xcxr2_firmware::::::::
dell	emc_xc_core_xc940_system_firmware	< 2.22.2	cpe:2.3:o:dell:emc_xc_core_xc940_system_firmware::::::::
dell	emc_xc_core_xc740xd2_firmware	< 2.22.1	cpe:2.3:o:dell:emc_xc_core_xc740xd2_firmware::::::::
dell	emc_xc_core_xc740xd_system_firmware	< 2.22.2	cpe:2.3:o:dell:emc_xc_core_xc740xd_system_firmware::::::::
dell	emc_xc_core_xc640_system_firmware	< 2.22.2	cpe:2.3:o:dell:emc_xc_core_xc640_system_firmware::::::::
dell	emc_xc_core_6420_system_firmware	< 2.22.2	cpe:2.3:o:dell:emc_xc_core_6420_system_firmware::::::::
dell	emc_storage_nx3340_firmware	< 2.22.2	cpe:2.3:o:dell:emc_storage_nx3340_firmware::::::::
dell	emc_storage_nx3240_firmware	< 2.22.2	cpe:2.3:o:dell:emc_storage_nx3240_firmware::::::::
dell	poweredge_xe7440_firmware	< 2.22.2	cpe:2.3:o:dell:poweredge_xe7440_firmware::::::::
dell	poweredge_xe7420_firmware	< 2.22.2	cpe:2.3:o:dell:poweredge_xe7420_firmware::::::::
dell	poweredge_xe2420_firmware	< 2.22.2	cpe:2.3:o:dell:poweredge_xe2420_firmware::::::::
dell	dss_8440_firmware	< 2.22.2	cpe:2.3:o:dell:dss_8440_firmware::::::::
dell	poweredge_c4140_firmware	< 2.22.2	cpe:2.3:o:dell:poweredge_c4140_firmware::::::::
dell	poweredge_mx840c_firmware	< 2.22.1	cpe:2.3:o:dell:poweredge_mx840c_firmware::::::::
dell	poweredge_mx740c_firmware	< 2.22.1	cpe:2.3:o:dell:poweredge_mx740c_firmware::::::::
dell	poweredge_m640_\(for_pe_vrtx\)_firmware	< 2.22.2	cpe:2.3:o:dell:poweredge_m640_\(for_pe_vrtx\)_firmware::::::::
dell	poweredge_m640_firmware	< 2.22.2	cpe:2.3:o:dell:poweredge_m640_firmware::::::::
dell	poweredge_fc640_firmware	< 2.22.2	cpe:2.3:o:dell:poweredge_fc640_firmware::::::::
dell	poweredge_c6420_firmware	< 2.22.2	cpe:2.3:o:dell:poweredge_c6420_firmware::::::::
dell	poweredge_t640_firmware	< 2.22.1	cpe:2.3:o:dell:poweredge_t640_firmware::::::::
dell	poweredge_r940xa_firmware	< 2.22.1	cpe:2.3:o:dell:poweredge_r940xa_firmware::::::::
dell	poweredge_r840_firmware	< 2.22.1	cpe:2.3:o:dell:poweredge_r840_firmware::::::::
dell	poweredge_r740xd2_firmware	< 2.22.1	cpe:2.3:o:dell:poweredge_r740xd2_firmware::::::::
dell	poweredge_xr2_firmware	< 2.22.1	cpe:2.3:o:dell:poweredge_xr2_firmware::::::::
dell	poweredge_t440_firmware	< 2.22.1	cpe:2.3:o:dell:poweredge_t440_firmware::::::::
dell	poweredge_r440_firmware	< 2.22.1	cpe:2.3:o:dell:poweredge_r440_firmware::::::::
dell	poweredge_r540_firmware	< 2.22.1	cpe:2.3:o:dell:poweredge_r540_firmware::::::::
dell	poweredge_r940_firmware	< 2.22.2	cpe:2.3:o:dell:poweredge_r940_firmware::::::::
dell	poweredge_r640_firmware	< 2.22.2	cpe:2.3:o:dell:poweredge_r640_firmware::::::::
dell	poweredge_r740xd_firmware	< 2.22.2	cpe:2.3:o:dell:poweredge_r740xd_firmware::::::::
dell	poweredge_r740_firmware	< 2.22.2	cpe:2.3:o:dell:poweredge_r740_firmware::::::::

References for CVE-2024-38303

URL	Tags
https://www.dell.com/support/kbdoc/en-us/000228135/dsa-2024-309-security-update-for-dell-poweredge-server-for-improper-input-validation-vulnerability	Vendor Advisory

URL

CVE-2024-38303

Exploit prediction scoring system (EPSS) score for CVE-2024-38303

Common vulnerability scoring system (CVSS) metrics for CVE-2024-38303

Weakness enumeration for CVE-2024-38303

Affected software / configurations for CVE-2024-38303

References for CVE-2024-38303