How severe is CVE-2015-2823?

CVE-2015-2823 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2015-2823 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-2823?

CVE-2015-2823 primarily affects Siemens Wincc. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-2823?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2015-2823 published?

CVE-2015-2823 was published on 2015-04-08 and last updated on 2026-06-17.

CVE-2015-2823

CVE-2015-2823 is a medium-severity vulnerability in Siemens Wincc with a CVSS 2.0 base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Medium (CVSS 2.0 base score 6.8)
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Siemens Wincc
Published: 2015-04-08
Last modified: 2026-06-17

Description

Siemens SIMATIC HMI Basic Panels 2nd Generation before WinCC (TIA Portal) 13 SP1 Upd2, SIMATIC HMI Comfort Panels before WinCC (TIA Portal) 13 SP1 Upd2, SIMATIC WinCC Runtime Advanced before WinCC (TIA Portal) 13 SP1 Upd2, SIMATIC WinCC Runtime Professional before WinCC (TIA Portal) 13 SP1 Upd2, SIMATIC HMI Basic Panels 1st Generation (WinCC TIA Portal), SIMATIC HMI Mobile Panel 277 (WinCC TIA Portal), SIMATIC HMI Multi Panels (WinCC TIA Portal), and SIMATIC WinCC 7.x before 7.3 Upd4 allow remote attackers to complete authentication by leveraging knowledge of a password hash without knowledge of the associated password.

Frequently asked questions

What is CVE-2015-2823?: Siemens SIMATIC HMI Basic Panels 2nd Generation before WinCC (TIA Portal) 13 SP1 Upd2, SIMATIC HMI Comfort Panels before WinCC (TIA Portal) 13 SP1 Upd2, SIMATIC WinCC Runtime Advanced before WinCC (TIA Portal) 13 SP1 Upd2, SIMATIC WinCC Runtime Professional before WinCC (TIA Portal) 13 SP1 Upd2, SIMATIC HMI Basic Panels 1st Generation (WinCC TIA Portal), SIMATIC HMI Mobile Panel 277 (WinCC TIA Portal), SIMATIC HMI Multi Panels (WinCC TIA Portal), and SIMATIC WinCC 7.x before 7.3 Upd4 allow remote attackers to complete authentication by leveraging knowledge of a password hash without knowledge of the associated password.
How severe is CVE-2015-2823?: CVE-2015-2823 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2015-2823 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-2823?: CVE-2015-2823 primarily affects Siemens Wincc. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-2823?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-2823 published?: CVE-2015-2823 was published on 2015-04-08 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:siemens:wincc:7.0:*:*:*:*:*:*:*
cpe:2.3:a:siemens:wincc:7.1:*:*:*:*:*:*:*
cpe:2.3:a:siemens:wincc:7.2:*:*:*:*:*:*:*
cpe:2.3:a:siemens:wincc:7.3:*:*:*:*:*:*:*
cpe:2.3:a:siemens:wincc:*:sp1:*:*:*:*:*:*
cpe:2.3:a:siemens:wincc:*:sp1:*:*:advanced:*:*:*

More vulnerabilities in Siemens Wincc

CVE-2011-4514 — Critical (CVSS 10.0): The TELNET daemon in Siemens WinCC flexible 2004, 2005, 2007, and 2008; WinCC V11 (aka TIA portal); the TP, OP, MP,…
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CVE-2011-4509 — Critical (CVSS 10.0): The HMI web server in Siemens WinCC flexible 2004, 2005, 2007, and 2008; WinCC V11 (aka TIA portal); the TP, OP, MP,…
CVE-2011-4876 — Critical (CVSS 9.3): Directory traversal vulnerability in HmiLoad in the runtime loader in Siemens WinCC flexible 2004, 2005, 2007, and…
CVE-2011-4875 — Critical (CVSS 9.3): Stack-based buffer overflow in HmiLoad in the runtime loader in Siemens WinCC flexible 2004, 2005, 2007, and 2008;…
CVE-2011-4508 — Critical (CVSS 9.3): The HMI web server in Siemens WinCC flexible 2004, 2005, 2007, and 2008 before SP3; WinCC V11 (aka TIA portal) before…

All CVEs affecting Siemens Wincc →

Other CWE-287 (Improper Authentication) vulnerabilities

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