CVE-2023-21415 [Medium] | Path Traversal in Axis Os

Sandro Poppi, member of the AXIS OS Bug Bounty Program, has found that the VAPIX API overlay_del.cgi is vulnerable to path traversal attacks that allows for file deletion. This flaw can only be exploited after authenticating with an operator- or administrator-privileged service account. Axis has released patched AXIS OS versions for the highlighted flaw. Please refer to the Axis security advisory for more information and solution.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.13%	0.59%	+0.46%
2	2025-11-21	0.40%	0.13%	-0.26%
3	2025-11-18	—	0.40%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.13%

0.59%

+0.46%

2025-11-21

0.40%

0.13%

-0.26%

2025-11-18

—

0.40%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
6.5	3.1	MEDIUM	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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:L) A normal user session is enough; they don’t have to be admin. 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:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	2.8	3.6	[email protected]
8.1	3.1	HIGH	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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:L) A normal user session is enough; they don’t have to be admin. 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:N) Doesn’t really leak secrets in a meaningful 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	5.2	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

6.5

3.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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:L): A normal user session is enough; they don’t have to be admin.
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:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:N): Data isn’t meaningfully altered or forged.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

2.8

3.6

[email protected]

8.1

3.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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:L): A normal user session is enough; they don’t have to be admin.
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:N): Doesn’t really leak secrets in a meaningful 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

5.2

[email protected]

Affected software / configurations for CVE-2023-21415

Vendor	Product	Version	Raw CPE
axis	axis_os	>= 6.50.5.3, < 6.50.5.14	cpe:2.3:o:axis:axis_os:::::-:::*
axis	axis_os	>= 11.0.81, < 11.6.94	cpe:2.3:o:axis:axis_os:::::active:::*
axis	axis_os_2016	>= 6.50.2, < 6.50.5.2	cpe:2.3:o:axis:axis_os_2016:::::lts:::*
axis	axis_os_2018	< 8.40.35	cpe:2.3:o:axis:axis_os_2018:::::lts:::*
axis	axis_os_2020	< 9.80.47	cpe:2.3:o:axis:axis_os_2020:::::lts:::*
axis	axis_os_2022	< 10.12.206	cpe:2.3:o:axis:axis_os_2022:::::lts:::*

References for CVE-2023-21415

URL	Tags
https://www.axis.com/dam/public/b6/55/e2/cve-2023-21415pdf-en-US-416245.pdf	Vendor Advisory

URL

CVE-2023-21415

Exploit prediction scoring system (EPSS) score for CVE-2023-21415

Common vulnerability scoring system (CVSS) metrics for CVE-2023-21415

Weakness enumeration for CVE-2023-21415

Affected software / configurations for CVE-2023-21415

References for CVE-2023-21415