CVE-2013-1618

The TLS implementation in Opera before 12.13 does not properly consider timing side-channel attacks on a MAC check operation during the processing of malformed CBC padding, which allows remote attackers to conduct distinguishing attacks and plaintext-recovery attacks via statistical analysis of timing data for crafted packets, a related issue to CVE-2013-0169.

Published: 2013-02-08 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-1618 is rated Moderate Risk (41.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.76%). Review affected assets and schedule remediation.

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-2013-1618

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 2026-03-03 0.53% 0.76% +0.24%
2 2025-03-30 0.83% 0.53% -0.30%
3 2025-03-29 — 0.83% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-1618

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.0 2.0 MEDIUM
AV:N/AC:H/Au:N/C:P/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:H)
Exploitation requires uncommon or highly specific conditions.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 4.9 4.9 [email protected]

Weakness enumeration for CVE-2013-1618

OS Trackers for CVE-2013-1618

vendor priority summary link
gentoo normal CVE-2013-1618: 1 GLSA(s) (201406-14), 1 atom(s) (www-client/opera); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2013-1618

Affected software / configurations for CVE-2013-1618

Vendor Product Version Raw CPE
opera opera_browser <= 12.12 cpe:2.3:a:opera:opera_browser:*:*:*:*:*:*:*:*
opera opera_browser 12.00 cpe:2.3:a:opera:opera_browser:12.00:*:*:*:*:*:*:*
opera opera_browser 12.00 cpe:2.3:a:opera:opera_browser:12.00:beta:*:*:*:*:*:*
opera opera_browser 12.01 cpe:2.3:a:opera:opera_browser:12.01:*:*:*:*:*:*:*
opera opera_browser 12.02 cpe:2.3:a:opera:opera_browser:12.02:*:*:*:*:*:*:*
opera opera_browser 12.10 cpe:2.3:a:opera:opera_browser:12.10:*:*:*:*:*:*:*
opera opera_browser 12.10 cpe:2.3:a:opera:opera_browser:12.10:beta:*:*:*:*:*:*
opera opera_browser 12.11 cpe:2.3:a:opera:opera_browser:12.11:*:*:*:*:*:*:*

References for CVE-2013-1618

cvelogic Threat Intelligence