CVE-2023-2876 | Session cookie exposure for client side script

Sensitive Cookie Without 'HttpOnly' Flag vulnerability in ABB REX640 PCL1 (firmware modules), ABB REX640 PCL2 (Firmware modules), ABB REX640 PCL3 (firmware modules) allows Cross-Site Scripting (XSS).This issue affects REX640 PCL1: from 1.0;0 before 1.0.8; REX640 PCL2: from 1.0;0 before 1.1.4; REX640 PCL3: from 1.0;0 before 1.2.1.

Published: 2023-06-13 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-2876 is rated Low Risk (29.4/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.25%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-2876

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-09 0.18% 0.25% +0.07%
2 2025-03-17 0.05% 0.18% +0.13%
3 2024-11-23 — 0.05% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-2876

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
3.1 3.1 LOW
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N 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:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.6 1.4 [email protected]
6.1 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N 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:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 2.7 [email protected]

Weakness enumeration for CVE-2023-2876

Affected software / configurations for CVE-2023-2876

Vendor Product Version Raw CPE
abb rex640_pcl1_firmware >= 1.0.0, < 1.0.8 cpe:2.3:o:abb:rex640_pcl1_firmware:*:*:*:*:*:*:*:*
abb rex640_pcl2_firmware >= 1.0.0, < 1.1.4 cpe:2.3:o:abb:rex640_pcl2_firmware:*:*:*:*:*:*:*:*
abb rex640_pcl3_firmware >= 1.0.0, < 1.2.1 cpe:2.3:o:abb:rex640_pcl3_firmware:*:*:*:*:*:*:*:*

References for CVE-2023-2876

cvelogic Threat Intelligence